MK5 Golf GTI
All Things Mk5 => How to Guides / Troubleshooting => Topic started by: jedi-knight83 on November 06, 2012, 12:14:41 am
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SO had my car back for a few days since its most recent trip to the garage.. feels like its been off the road more than on it at the moment.
This time I had to have the manifold flap adjuster motor changed.
Car runs SOOOO much better now and the power delivery is amazing (probably had been playing up for a while and caused the car to be sluggish and un responsive)
But my mpg is still terrible. Came home with the cruise on 80-85mph (revs 3000-3100 ish) and struggled to get 25mpg.
So far ive changed:
n75
n80
pcv
sparks
dv
flap adjuster motor
cam follower
air intake seals
fuel filter
looking for suggestions on other tests i can run or where to look next?
Thanks in advance.
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have you tried resetting your trip on the wiper switch, if not try resetting it at 70 mph and that should give you a more precise reading...
Note to all as far as i have been made aware this should be done after any work has been carried out on the car...
Sounds funny, but it worked for me...
hope it helps!
:happy2:
So the flap adjuster motor helped :congrats: :congrats:
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have you tried resetting your trip on the wiper switch, if not try resetting it at 70 mph and that should give you a more precise reading...
Note to all as far as i have been made aware this should be done after any work has been carried out on the car...
If you are resetting it on the drive, all you are doing is clearing the start of the journey where youre getting up to speed which takes a lot of fuel. Precise reading? Nope, but if you like to look at smaller numbers then yes this is a good way to fool yourself :wink:
For only a little work (no money needed), just knock your precat out. It will gain you some mileage. Also S3 IC helped out for me, but no point in doing that just for mileage. Clean airfilter helps too.
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Try the reset as stated above. Failing that I can only think it might be your maf sensor playing up which causes poor mpg. I could only get between 27-30mpg on a steady driveblast night. As the weather is colder the mpg will drop due to the air being denser and the car injecting more fuel to compensate. I found switching back to the oem filter helped with mpg and no difference in performance from an aftermarket one.
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To be honest... thats probably about right. I did a 2 hr journey a few nights ago. 3 people in the car and full boot. Avg. speed about the same as yours with a few booting sessions... and it did 26MPG.
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I imagine at 80-85mph you will only see mid twenties. 60-65mph and you might see mid thirties. Have logged my petrol consumption on my ED30 since my ownership and (without looking right now) i think in the last year, on average I have achieved 27.8 mpg, albeit with my rather heavy right foot.
:happy2:
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I imagine at 80-85mph you will only see mid twenties. 60-65mph and you might see mid thirties. Have logged my petrol consumption on my ED30 since my ownership and (without looking right now) i think in the last year, on average I have achieved 27.8 mpg, albeit with my rather heavy right foot.
:happy2:
Usually on my 120 mile trips to Lincoln on the motorway I see between 30-33mpg at the "higher speed" but I'm frugal with the right foot.
Can I ask how many miles on the clock atm?
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About the same for me - maybe 31mpg over a 50 miles trip at around an indicated 80mph.
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If it helps, the colder weather will hammer your MPG :sad1:
Mine is noticeably worse now the temps have dropped off. . .
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I imagine at 80-85mph you will only see mid twenties. 60-65mph and you might see mid thirties. Have logged my petrol consumption on my ED30 since my ownership and (without looking right now) i think in the last year, on average I have achieved 27.8 mpg, albeit with my rather heavy right foot.
:happy2:
Usually on my 120 mile trips to Lincoln on the motorway I see between 30-33mpg at the "higher speed" but I'm frugal with the right foot.
Can I ask how many miles on the clock atm?
56k
When really trying, with cruise set at around 70 mph (according to the GPS) I get approx 34-38mpg on my monthly 150 mile motorway trip up Norf to see family. Boring as hell and not why I got the car so will remain happy with mid twenties and (occasional) teens!! :evilgrin:
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ok, if you have access to vcds could you log block 032 for your fuel trim. You don't need to start the car to log this block.
Also did you do a basic setting for the Intake Manifold Runner?
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have you tried resetting your trip on the wiper switch, if not try resetting it at 70 mph and that should give you a more precise reading...
Note to all as far as i have been made aware this should be done after any work has been carried out on the car...
Sounds funny, but it worked for me...
hope it helps!
:happy2:
So the flap adjuster motor helped :congrats: :congrats:
yes flap adjuster motor... all £149+vat of it, seems to have cured the latest running issue.
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have you tried resetting your trip on the wiper switch, if not try resetting it at 70 mph and that should give you a more precise reading...
Note to all as far as i have been made aware this should be done after any work has been carried out on the car...
If you are resetting it on the drive, all you are doing is clearing the start of the journey where youre getting up to speed which takes a lot of fuel. Precise reading? Nope, but if you like to look at smaller numbers then yes this is a good way to fool yourself :wink:
For only a little work (no money needed), just knock your precat out. It will gain you some mileage. Also S3 IC helped out for me, but no point in doing that just for mileage. Clean airfilter helps too.
pre cat is already out and has been back to r-tech since removing it to tweak the map for the pre cat delete.
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To be honest... thats probably about right. I did a 2 hr journey a few nights ago. 3 people in the car and full boot. Avg. speed about the same as yours with a few booting sessions... and it did 26MPG.
this was with just me in the car and no luggage.
Just after it was mapped by r-tech it was comfortably getting 28-30mpg at those kind of speeds
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I imagine at 80-85mph you will only see mid twenties. 60-65mph and you might see mid thirties. Have logged my petrol consumption on my ED30 since my ownership and (without looking right now) i think in the last year, on average I have achieved 27.8 mpg, albeit with my rather heavy right foot.
:happy2:
Usually on my 120 mile trips to Lincoln on the motorway I see between 30-33mpg at the "higher speed" but I'm frugal with the right foot.
Can I ask how many miles on the clock atm?
just about to hit 67k
Ive seen 28-32 mpg on a run at 80ish mph before but it seems to have got alot worse lately and hasnt improved after changing all these parts.
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To be honest... thats probably about right. I did a 2 hr journey a few nights ago. 3 people in the car and full boot. Avg. speed about the same as yours with a few booting sessions... and it did 26MPG.
this was with just me in the car and no luggage.
Just after it was mapped by r-tech it was comfortably getting 28-30mpg at those kind of speeds
Did you try resetting it, jedi?
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ok, if you have access to vcds could you log block 032 for your fuel trim. You don't need to start the car to log this block.
Also did you do a basic setting for the Intake Manifold Runner?
Im away in the van working this week but i'll log that when i get home at the weekend. Is it just a single number then? not something you need to log while out on a run?
Also im not sure about the manifold runner setting. I'll ask the garage that did the work but I can also do this when I get home with vagcom.
thanks for the advice.
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To be honest... thats probably about right. I did a 2 hr journey a few nights ago. 3 people in the car and full boot. Avg. speed about the same as yours with a few booting sessions... and it did 26MPG.
this was with just me in the car and no luggage.
Just after it was mapped by r-tech it was comfortably getting 28-30mpg at those kind of speeds
Did you try resetting it, jedi?
Hi, not since you posted as I'm away in the van... but thinking about it i did actually reset my mpg on the move on sunday. I normally have it on the one that resets every time you get in the car but when it was getting such low mpg i switched it to the other memory and reset that while i was driving. When i got home the memory that i had reset on the move was 25.5 and the memory that had been recording mpg since i started the journey was 24.8
I dont think its computer reset issue as i'm often resetting it tbh to see what the current mpg is....
Other symptoms of the possible over fuelling include getting through a full tank of vpower in 280 miles and a very sooty exhaust pipe after just a short drive.
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Try you MAF, maybe just give it a clean before buying a new one :happy2:
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Try you MAF, maybe just give it a clean before buying a new one :happy2:
I cleaned it a few months ago when I was having issues with my itg air intake but I'll try it again. NOTE... im back on the OEM air intake now with a pipercross panel filter but I had this when i was also getting good mpg
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Could just be the colder weather now, as a few have said above... Hard time of the year to test this...
:drinking:
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ok, if you have access to vcds could you log block 032 for your fuel trim. You don't need to start the car to log this block.
Also did you do a basic setting for the Intake Manifold Runner?
Im away in the van working this week but i'll log that when i get home at the weekend. Is it just a single number then? not something you need to log while out on a run?
Also im not sure about the manifold runner setting. I'll ask the garage that did the work but I can also do this when I get home with vagcom.
thanks for the advice.
There are two values for the fuel trim and doesn't require you to go for a run.
The first field tells the fuel trim at idle and the second field tells the fuel trim at elevated engine speeds.
Negative values indicate that the engine is running too rich and oxygen sensor control is therefore making it more lean by reducing the amount of time that the injectors are open.
Positive values indicate that the engine is running too lean and oxygen sensor control is therefore making it richer by increasing the amount of time that the injectors are open.
Specifications for normal operation are usually somewhere near +/- 10%.
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Hasn't H4rdy just accidentally solved his long term low mpg problem by accident. I can't remember the thread or what was the problem. Give him a PM. :happy2:
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Hasn't H4rdy just accidentally solved his long term low mpg problem by accident. I can't remember the thread or what was the problem. Give him a PM. :happy2:
Wrong rail pressure sensor.
http://www.mk5golfgti.co.uk/forum/index.php/topic,51751.msg619905.html#msg619905
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I have to say both my GTIs get pretty poor MPG. Never get higher than 22-24 mpg in town in my mapped ed30. Used to get around 25-27 in my K03 GTI. Makes jus wanna buy a V8
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Ok. Just performed a basic setting. Will see if that changes anything
Also happy to report there were no new fault codes :)
I checked the fuel trims on block 32 aswell
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg.tapatalk.com%2Fd%2F12%2F11%2F10%2Fubyge2aq.jpg&hash=08bc886b1a208c055ae3ced6214ff88f25e0703f)
I think that's a bit outside the recommended 10%?
Sent from my iPhone using Tapatalk
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I get 38mpg on a 45 minute run to work keeping at speed limits with the odd overtake.
Stage 2+.
Just a note, I changed some MAP settings the other day as I like to play, 6-2-9, where the 2 is richer and the economy dropped right off.
I suggest your MAP is running on the safe side?
I am back to 9-6-9 et voila 38mpg again.
Have you tried it with the MAP turned off?
That would be the crux of it.
Can you do that?
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38MPG.. thats insane... ive never seen higher than 35... usually 25! :driver:
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Ok. Just performed a basic setting. Will see if that changes anything
Also happy to report there were no new fault codes :)
I checked the fuel trims on block 32 aswell
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg.tapatalk.com%2Fd%2F12%2F11%2F10%2Fubyge2aq.jpg&hash=08bc886b1a208c055ae3ced6214ff88f25e0703f)
I think that's a bit outside the recommended 10%?
Whose map are you running and with what intake?
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I get 38mpg on a 45 minute run to work keeping at speed limits with the odd overtake.
Stage 2+.
Just a note, I changed some MAP settings the other day as I like to play, 6-2-9, where the 2 is richer and the economy dropped right off.
I suggest your MAP is running on the safe side?
I am back to 9-6-9 et voila 38mpg again.
Have you tried it with the MAP turned off?
That would be the crux of it.
Can you do that?
not sure what all those numbers are. Guessing its a revo setting?
I cant turn my map off myself.
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Ok. Just performed a basic setting. Will see if that changes anything
Also happy to report there were no new fault codes :)
I checked the fuel trims on block 32 aswell
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg.tapatalk.com%2Fd%2F12%2F11%2F10%2Fubyge2aq.jpg&hash=08bc886b1a208c055ae3ced6214ff88f25e0703f)
I think that's a bit outside the recommended 10%?
Whose map are you running and with what intake?
R-Tech stage 1 and I'm on a stock intake.
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R-Tech stage 1 and I'm on a stock intake.
Hmm, I would contact Nick and ask him about those values.
Usually a poor aftermarket intake will give a high partial lambda but you shouldn't see this with a stock intake that has no leaks and with a good maf sensor.
Just an afterthought but when did you last change your air filter?
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R-Tech stage 1 and I'm on a stock intake.
Hmm, I would contact Nick and ask him about those values.
Usually a poor aftermarket intake will give a high partial lambda but you shouldn't see this with a stock intake that has no leaks and with a good maf sensor.
Just an afterthought but when did you last change your air filter?
It was a new filter about 1 year ago. Its a pipercross panel.
when you say air leaks.. where should i be checking?
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It was a new filter about 1 year ago. Its a pipercross panel.
when you say air leaks.. where should i be checking?
With the oem setup you really only have two joints, one that attaches to the turbo inlet (secured with a clamp) and at its other end to the airbox that's held secure by 2 clips. It's unlikely that there would be a crack in the plastic connecting tubing but there is a rubber O ring that seals the joint at the air box side that could have dropped off or badly deformed leading to an air leak.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fkk207%2FStevep_010%2FIMG_2726.jpg&hash=be4bd6994467825872b9428593bb910eb505f6c5)
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It was a new filter about 1 year ago. Its a pipercross panel.
when you say air leaks.. where should i be checking?
With the oem setup you really only have two joints, one that attaches to the turbo inlet (secured with a clamp) and at its other end to the airbox that's held secure by 2 clips. It's unlikely that there would be a crack in the plastic connecting tubing but there is a rubber O ring that seals the joint at the air box side that could have dropped off or badly deformed leading to an air leak.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fkk207%2FStevep_010%2FIMG_2726.jpg&hash=be4bd6994467825872b9428593bb910eb505f6c5)
I replaced this part recently due to a deformed O ring seal. So its brand new and both seals are also new
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In that case I'm out of ideas.. :ashamed:
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Have you tried fitting an oe paper panel filter or cleaning the filter?
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Have you tried fitting an oe paper panel filter or cleaning the filter?
I'll give it a go tomorrow. Anyone know the cleaning process for a pipercross panel :)
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Have you tried replacing the lambda sensor??
That can affect the MPG if it's playing up. You may not get a fault code from it either :surprised: - could have been damaged the sensor when removing the pre-cat?
Failing that, ring Nick :grin:
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Have you tried replacing the lambda sensor??
That can affect the MPG if it's playing up. You may not get a fault code from it either :surprised: - could have been damaged the sensor when removing the pre-cat?
Failing that, ring Nick :grin:
No i've not tried that.
Nick suggested trying the MAF sensor. thing is I'm a bit poor at the moment and 'trying' all these sensors means buying new ones and the MAF is over £100 and goodness knows what the other one is... pretty pricey just to try them out?
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If you're out for a run, could you log block 031 for lambda and block 112 for median EGTand post what you get.
Am I right in thinking you removed your precat?
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Turbo cars eh :sad1:
You don't get these problems with N/A engines :grin:
I'm troubleshooting a misfire at idle, stuttering / surging under load, clicking front suspension, clunking rear suspension and now my clutch is about finished :signLOL:
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How do I do this logging with vcds? My car is running extremely low mpg and need to find out what the problem is, how do I log 32?
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How do I do this logging with vcds? My car is running extremely low mpg and need to find out what the problem is, how do I log 32?
If you have a vcds cable then turn the ignition on (you don't have to start the car )>click select>engine>measuring blocks, type in 032 in the first group box then press go button and the values will pop up like in Jedi's pic.
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If you're out for a run, could you log block 031 for lambda and block 112 for median EGTand post what you get.
Am I right in thinking you removed your precat?
I'll have to have a go at this later in the week or next weekend. what kind of run should i log ? a quick A road blast?
Yes pre cat removed.
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Turbo cars eh :sad1:
You don't get these problems with N/A engines :grin:
I'm troubleshooting a misfire at idle, stuttering / surging under load, clicking front suspension, clunking rear suspension and now my clutch is about finished :signLOL:
tell me about it! this whole year has been one sensor or valve or flap after the other... im hoping for a year of problem free motoring next year :)
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How do I do this logging with vcds? My car is running extremely low mpg and need to find out what the problem is, how do I log 32?
If you have a vcds cable then turn the ignition on (you don't have to start the car )>click select>engine>measuring blocks, type in 032 in the first group box then press go button and the values will pop up like in Jedi's pic.
Thanks again bacillus il give this a try and see what results I get, cheers :smiley:
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I'll have to have a go at this later in the week or next weekend. what kind of run should i log ? a quick A road blast?
Yes pre cat removed.
You want a third or fourth (preferable) gear run from around 2k to redline at wot. If you have dsg then you may have to stop at 6.3ish k rpm because of the box upshifting.
Can I assume that other parameters like boost, rail pressure and cylinder correction factors are all ok?
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I'll have to have a go at this later in the week or next weekend. what kind of run should i log ? a quick A road blast?
Yes pre cat removed.
You want a third or fourth (preferable) gear run from around 2k to redline at wot. If you have dsg then you may have to stop at 6.3ish k rpm because of the box upshifting.
Can I assume that other parameters like boost, rail pressure and cylinder correction factors are all ok?
Ah ok just a normal power run then.
I can log boost, rail pressures etc when i do it. It feels nice and powerful so presuming all that is ok.
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38MPG.. thats insane... ive never seen higher than 35... usually 25! :driver:
Tbh its not all the time, but I can drive very economically.
35 is good.
Not seen over 30mpg for a while :driver:
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Right I've got vag com for the evening so I can do a few logging runs. Can I have a list of the blocks that would be most useful to try to see what's causing my over fuelling.
Thank you :)
Sent from my iPhone using Tapatalk
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Right I ran a couple of logs with a few difference things being monitored.
Click the link and it should auto download an XLS file
Run 1 and 2
http://u55158955@s300610021.websitehome.co.uk/UtilityImages/Run%201%20and%202.xls
Run 3 and 4
http://u55158955@s300610021.websitehome.co.uk/UtilityImages/Run%203%20and%204.xls
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Clicking your link does nothing on my laptop... :confused:
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Clicking your link does nothing on my laptop... :confused:
you checked your download folder?
I can email if you pm and address
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It went south after messing around with induction kits, I would say maf but dont go and buy one, borrow one or run with it unplugged so we what happend with the MPG. And it you failed the MOT with just the precat removed then there could be other underlaying issues, fault lambda sensor, exhaust not fully air tight, PCV issues ect...
Best bet it to get booked in for an advance logging session and health check on the dyno.
Last time I saw the car the MAF seal was not fully sealed so the ADD/MULT and STFTs would have been reading incorrect so there would have been no way of getting a good picture of whats going on.
Its hard to try and diagnose a fault from remote logs, Its easy for me to log on the dyno using the eddy brake to control the load so I can look at the data in real time and compare with external sensors.
Nick
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It went south after messing around with induction kits, I would say maf but dont go and buy one, borrow one or run with it unplugged so we what happend with the MPG. And it you failed the MOT with just the precat removed then there could be other underlaying issues, fault lambda sensor, exhaust not fully air tight, PCV issues ect...
Best bet it to get booked in for an advance logging session and health check on the dyno.
Last time I saw the car the MAF seal was not fully sealed so the ADD/MULT and STFTs would have been reading incorrect so there would have been no way of getting a good picture of whats going on.
Its hard to try and diagnose a fault from remote logs, Its easy for me to log on the dyno using the eddy brake to control the load so I can look at the data in real time and compare with external sensors.
Nick
Ah.. the man himself. New log in?
What should happen with the maf unplugged?
MAF seal is now replaced and sealed tight.
I'll get it booked in with you asap i think.... just need a spare day when i can bring it over :)
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It went south after messing around with induction kits, I would say maf but dont go and buy one, borrow one or run with it unplugged so we what happend with the MPG. And it you failed the MOT with just the precat removed then there could be other underlaying issues, fault lambda sensor, exhaust not fully air tight, PCV issues ect...
Best bet it to get booked in for an advance logging session and health check on the dyno.
Last time I saw the car the MAF seal was not fully sealed so the ADD/MULT and STFTs would have been reading incorrect so there would have been no way of getting a good picture of whats going on.
Its hard to try and diagnose a fault from remote logs, Its easy for me to log on the dyno using the eddy brake to control the load so I can look at the data in real time and compare with external sensors.
Nick
Ah.. the man himself. New log in?
What should happen with the maf unplugged?
MAF seal is now replaced and sealed tight.
I'll get it booked in with you asap i think.... just need a spare day when i can bring it over :)
The primary fuel is based on MAF kg/hr and a singel value fuel injector constant which basically allows the ecu to know how many ms the injectors need to open to match the required lambda. If the maf is reading wrong then the first 02 sensor will compensate can corrent the injection times to keep the lambda where it is needed to be, this is called fuel trims. There could be areas on the maf that are reading wrong causing the fuel trims to read high.
If the maf is fault it will also mess up the ecu torque / load structures which means less time can be given which mean reduced engine combustioneffichency. By unplugging the maf the ecu will revert to a generic mode for maf reading and use other sensor to work out load. If you unplug the maf and the car seems to perform better or your mpg goes up by 3-4mpg then its a good sign the maf if fooked.
You are 100% safe driving with the unplugged.
Nick
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Hope you get this sorted Jedi.
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Hope you get this sorted Jedi.
He will when he trades it in for a TDI..lol
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Hope you get this sorted Jedi.
He will when he trades it in for a TDI..lol
LOL.
I will when i have enough time to look into it more and log it for Nick... just so flipping busy at the moment. I should have a few days next week.
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LOL
When your ready let me know, I will book you in for eco driver training and pump your tyes up. :P
I will fully check the car out for you smoke test it and try another maf, I can also do you a lean burn cruise map at the exact rpm, load TPS where your cruise speed is and see if we can end up getting your 80mph cruise upto 40mpg.. :star:
Nick
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LOL
When your ready let me know, I will book you in for eco driver training and pump your tyes up. :P
I will fully check the car out for you smoke test it and try another maf, I can also do you a lean burn cruise map at the exact rpm, load TPS where your cruise speed is and see if we can end up getting your 80mph cruise upto 40mpg.. :star:
Nick
Is that witchcraft nick?
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LOL
When your ready let me know, I will book you in for eco driver training and pump your tyes up. :P
I will fully check the car out for you smoke test it and try another maf, I can also do you a lean burn cruise map at the exact rpm, load TPS where your cruise speed is and see if we can end up getting your 80mph cruise upto 40mpg.. :star:
Nick
Is that witchcraft nick?
If you can do that get his car doing 40mpg at 80 mph ill be mighty impressed. I'll also be arranging a trip to you even sooner! :drool:
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LOL
When your ready let me know, I will book you in for eco driver training and pump your tyes up. :P
I will fully check the car out for you smoke test it and try another maf, I can also do you a lean burn cruise map at the exact rpm, load TPS where your cruise speed is and see if we can end up getting your 80mph cruise upto 40mpg.. :star:
Nick
Is that witchcraft nick?
If you can do that get his car doing 40mpg at 80 mph ill be mighty impressed. I'll also be arranging a trip to you even sooner! :drool:
I did a lean burn map on my old 1.8T which was just under 400bhp, and would do around 52mpg sitting at 75mph in 5th on the motorway. I just found my cruise driving variables and then at them points in my map ran a lean spot and set map to run map pressure just over zero with strong timing in a window of 600rpm. (not going to keep green EU nobs happy)
Even just by having a full 1:1 linear throttle load map can return 3-4 mpg, The Focus STs which I write maps for under HEX+ are seeing on average 50mile extra per tank just from a 1:1 throttle load map.
I never really looked in to eco stuff with Tfsi yet
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Does lean burning send EGT's up on standard exhuast?
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LOL
When your ready let me know, I will book you in for eco driver training and pump your tyes up. :P
I will fully check the car out for you smoke test it and try another maf, I can also do you a lean burn cruise map at the exact rpm, load TPS where your cruise speed is and see if we can end up getting your 80mph cruise upto 40mpg.. :star:
Nick
Is that witchcraft nick?
If you can do that get his car doing 40mpg at 80 mph ill be mighty impressed. I'll also be arranging a trip to you even sooner! :drool:
I did a lean burn map on my old 1.8T which was just under 400bhp, and would do around 52mpg sitting at 75mph in 5th on the motorway. I just found my cruise driving variables and then at them points in my map ran a lean spot and set map to run map pressure just over zero with strong timing in a window of 600rpm. (not going to keep green EU nobs happy)
Even just by having a full 1:1 linear throttle load map can return 3-4 mpg, The Focus STs which I write maps for under HEX+ are seeing on average 50mile extra per tank just from a 1:1 throttle load map.
I never really looked in to eco stuff with Tfsi yet
Mine still achives 40+mpg if i set cruise control at 70bhp :grin:
If you can make it better than that, you'd be a hero :notworthy:
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Mine still achives 40+mpg if i set cruise control at 70bhp :grin:
If you can make it better than that, you'd be a hero :notworthy:
I dont have the image of the average MPG, but it was 51mpg. but i have the image of the trip of the tank from full to empty.
(https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash4/477385_10150612962865283_1872117652_o.jpg)
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^^ :congrats: great effort!
That must be a 40-60mph run surely, I only get averages like that going through 50mph sections on the motorway :confused:
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I hate you all.
Disconnected my MAF and initially I thought it made a good difference but on the 2nd trip with it disconnected it was just as bad as before.
Need to get over to Nick ASAP
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How many MPG are you getting now?
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How many MPG are you getting now?
got 28mpg over 60 miles of mixed driving when i first disconnected it
then 25mpg over 60 miles of 80mph driving on the way home.
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I get about the same, havent been on a 60 mile drive at 70-80 for a wee while to compare :driver:
Really hard to tell now the weather is so cold...
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Have you tested the MPG the old fashion way rather than rely on the computer?...
You can change the MPG output via VCDS if I remember rightly - can't remember the setting off the top of my head, but it's in there somewhere.
Esp. nice if you want to see better MPG whilst still hooning it. :signLOL:
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Don't know if this helps mate, but I get 38- 40mpg on my 50mile daily round trip :ashamed: :evilgrin:
Ps. That is barely touching the throttle though.
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Can i just say without it meaning to say bad, why buy a perfermance car and then chase mpg numbers? If thats what is really wanted go down the oil burner route and still get decent performance but a lot better mpg. Just my 2 pence worth. :happy2:
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Can i just say without it meaning to say bad, why buy a perfermance car and then chase mpg numbers? If thats what is really wanted go down the oil burner route and still get decent performance but a lot better mpg. Just my 2 pence worth. :happy2:
Because i know what it COULD achieve. Its not like I've bought a lamborghini and I'm expecting it to get 50mpg...
This is a golf and it should be able to achieve 30 mpg.
Also its probably a sign of an underlying fault and I like to know that the car is working at its best.
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Can i just say without it meaning to say bad, why buy a perfermance car and then chase mpg numbers? If thats what is really wanted go down the oil burner route and still get decent performance but a lot better mpg. Just my 2 pence worth. :happy2:
I hear that. But it's nice to have a bit of both, isn't it - most peeps don't hoon it everywhere.
My Stage 1+ can pull on a standard Focus ST, but still return 40MPG at 70MPH, something the Focus can't get anywhere near.
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I hear what youre saying and appreciate that but when you come on this forum and start doing a lot of engine tweaking and performance mods then this will take its toll. Im not saying everyone goes around thrashing it everywhere , all im meaning is when you start modding etc... then its because you want a fast car. I also know that a lot of maps out there wil achieve better performance but i bet my bottom dollar most peeps dont get maps for mpg. :smiley:
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I hear what youre saying and appreciate that but when you come on this forum and start doing a lot of engine tweaking and performance mods then this will take its toll. Im not saying everyone goes around thrashing it everywhere , all im meaning is when you start modding etc... then its because you want a fast car. I also know that a lot of maps out there wil achieve better performance but i bet my bottom dollar most peeps dont get maps for mpg. :smiley:
Perhaps I should have made it clear that I believe its an underlying issue that is causing poor MPG and is something that has got worse.
If everything is working 100% and thats just the MPG I'm going to get then fair enough.. as you say I'd rather have the performance than great MPG.... but I believe I SHOULD have the performance and slightly better MPG than I'm currently getting so I'd like to find out what isn't working properly to cause my drop in MPG.
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Can i just say without it meaning to say bad, why buy a perfermance car and then chase mpg numbers? If thats what is really wanted go down the oil burner route and still get decent performance but a lot better mpg. Just my 2 pence worth. :happy2:
I've said this a million times on here. . .
The FSI technology in our engines is there to reduce fuel consumption, VW designed this car to be fuel efficient when driven gently, which is why most of us are driving a TFSI rather than a V6. :happy2:
Personally I like to potter about doing 40mpg on a run and when I'm in the mood for a blast, I don't give a rats b*****k how bad it is on fuel, but when just "driving" I want it to be as frugal as possible :laugh:
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LOL
When your ready let me know, I will book you in for eco driver training and pump your tyes up. :P
I will fully check the car out for you smoke test it and try another maf, I can also do you a lean burn cruise map at the exact rpm, load TPS where your cruise speed is and see if we can end up getting your 80mph cruise upto 40mpg.. :star:
Nick
Is that witchcraft nick?
If you can do that get his car doing 40mpg at 80 mph ill be mighty impressed. I'll also be arranging a trip to you even sooner! :drool:
I did a lean burn map on my old 1.8T which was just under 400bhp, and would do around 52mpg sitting at 75mph in 5th on the motorway. I just found my cruise driving variables and then at them points in my map ran a lean spot and set map to run map pressure just over zero with strong timing in a window of 600rpm. (not going to keep green EU nobs happy)
Even just by having a full 1:1 linear throttle load map can return 3-4 mpg, The Focus STs which I write maps for under HEX+ are seeing on average 50mile extra per tank just from a 1:1 throttle load map.
I never really looked in to eco stuff with Tfsi yet
I've arranged one road trip this month getting bits for my car. The next road trip will be up to yours to get my stage one sorted and judging by your expertise I'll be getting more mpg and mph! whats not to like! :grin:
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Maf off again this morning on a 60 mile drive to London. -2 all the way. 22.5 mpg doing 80-90. I know I can't expect 30mpg at that speed but 22mpg seems low?
Maf on yesterday and maf off today on the same trip and maf off made no difference.
Not sure it's maf issue?
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Can i just say without it meaning to say bad, why buy a perfermance car and then chase mpg numbers? If thats what is really wanted go down the oil burner route and still get decent performance but a lot better mpg. Just my 2 pence worth. :happy2:
mainly because even on stage 2 you should still get respectble mpg figures. if his indicating low mpg even when driving eco theres something wrong
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Maf off again this morning on a 60 mile drive to London. -2 all the way. 22.5 mpg doing 80-90. I know I can't expect 30mpg at that speed but 22mpg seems low?
Maf on yesterday and maf off today on the same trip and maf off made no difference.
Not sure it's maf issue?
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I know your trying to eliminate things by doing it but you'll be running way rich with the maf plug pulled anyway
I've not read your full thread so forgive me if Im going over old ground here but did you check lambda at cruise not WOT ?
Just forget the flat out data logging for the minute (Id guess you'd be in open loop with Niks map @ wot anyway)
Plug the Maf in & check the cruise logs of actual & requested lambda you should be dam close to lambda 1 at cruise, if it is then all is good if not then you may need that map tweaking a bit
Did you swap out the B1 Oxy yet ?
Just to add I'm not talking fuel trims like you checked before I mean actual vs requested lambda not the trim
My car is very high power i see 27-30 round town and 35-38 @ 70mph
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Maf off again this morning on a 60 mile drive to London. -2 all the way. 22.5 mpg doing 80-90. I know I can't expect 30mpg at that speed but 22mpg seems low?
Maf on yesterday and maf off today on the same trip and maf off made no difference.
Not sure it's maf issue?
Sent from my iPhone using Tapatalk
Did a run from Birmingham to London couple of Saturday's ago. Set off at 20.30, got back home by just after 22.00. Did mostly 80-90mph in temps of 5.5 C until i got to London when it rose to about 9-10 C. Ave MPG was about 27.5 MPG. Only blasted it a few times so maybe ate 1MPG off the average that i could have got but to leave behind the oil burning Mk6 golf was too great a temptation, and i also like to fly up the long hill as you leave oxford :laugh:
I'm definitely noticing a hammering on MPG since the cold weather kicked in. During the summer if i did the same run i'm wholly confident i could get 30MPG, 31 poss. If i stuck to cruising at 70mph then i'd see anywhere between 34-37MPG dependent upon how good a start i got going from doorstep to motorway.