disappointing performance continued....UPDATED after a day at MRC Tuning

[Top Cat]

Not sure on the insurance it may be one group more but wont be to much 

[T88OMM]

Hope you get it all sorted matey, sounds like your having a feckin nightmare 

[joesgti]

just read this thred, feel sorry for you mate, ive been there and i know how youl be feeling. 

if i were you if send the car back and get a different gti/ed30 

[08micsta]

Wow Duncan 

Its such a pity that your first experience with a GTi has been such a struggle. I think you deserve a round of applause for wanting to get another one and not just buying a Renault 

Just so you know. I spoke to a few racing centres and mechanics about your car... And tomorrow Im meeting with the Focus ST club (Dont slaughter me) and from there Im going to have meetings with two of our biggest Audi and VW specialists here in Cape Town.

I will report back what they say but echo what the others have said. Just replace it ftw.

Mike

[duncan]

Update!!!!!!

spent the day at MRC tuning:

drove around a quiet road full throttle in a couple of gears while it was being data logged, we were focusing on the usual suspects, fuel pressure, air mass meter, boost leaks

all apeared perfect but again was getting a rich mixture under full throttle (stock map). so although it was running Rich everything else was looking spot on so the decision was made to but the map on and have a look.

again went for a drive, data logging while full throttle, still coming up rich and not feeling perfect but still a million times more responsive than under the stock map

then went back to the work shop, map was changed to limit the fuel mixture so it wouldnt drop below 11.5 (below 9 before)
this made all the difference - the car was rapid, seriously rapid, couldnt belive the difference to be honest really was sensational.

while i was there i got the fuel filter changed, didnt notice much but did seem a bit more responsive than before.

then drove back, ended up dropping the owner Mihnea to heathrow as i was passing so when i got there he did a final check for error codes, warnings, nothing came up - although there was a weird error about the immobiliser but the car started so obviously nothing seriously wrong with it.

all in all the car seems to be behaving like a remapped GTI!! so am very very happy

when i woke up this morning i rang a local VW garage to get a trade in price for my car becuase they had an ED30 for sale.  the salesman was annoying (reminded me of one of those people on the apprentice who are supposed to be great salesman but are just annoying as hell!!)

ended up leaving it and sticking with the car to get it sorted, have invested alot of time an effort (and a little emotion) into getting it up to scratch so would have been lame to have given up.

i asked the tuner why it was running rich and what fixed it, he couldnt explain it since all the usual suspects were behaving, after making more changes to his map and limiting the ECU to stop making the car run so rich that seems to have done it

very strange though, was convinced that it was something faulty but looks ok

they dont have a rolling road so dont have figures and to be honest i dont want to know, am loving how the car performs, will only be dissapointed for no reason if its still only putting out 220bhp..... the torque feels much stronger than yesterday and that was running at 265lb/ft so is probably up in the 280's now.

thanks for all the help and advice guys

Cheers

Duncan

[john_o]

well , Im think Im pleased for you....
In all honesty its a workaround for an issue you still havent found/fixed.
However its your car and if you are happy , I am too 
with the mixture changed by that amount you probably have even more power than you think now 

[QD MBE]

Hopefully the end to your saga.  Enjoy the car now!

Good news.

 

[Cochese]

 Good to hear sh*t's working out for you Dunc. Now you can concentrate on enjoying the car!

[QD MBE]

Did they charge you for the new map?

[WhiteGTI]

Perhaps not the route that I would have taken, but I'm glad that your now happy, and that you can enjoy the car. 

[duncan]

Perhaps not the route that I would have taken, but I'm glad that your now happy, and that you can enjoy the car. 

what route would you have taken? thing was, inorder to get all the diagnostics for free had to get the map if the power returned, if it didnt i wouldnt have had to pay anything and was very thorough diagnostics.  what else could i have checked to see why it was running rich?

ended up paying £500 for the map which was very customised for my car, alot of changes were made from the base model map.

am very happy with the car and still kind of curious why it was running rich, but with the new map is running a good mixture and at the end of the day the car is under warranty so am not going to worry to much, they have said they are happy to reload any maps that get wiped by dealer updates for free and will remove and put back on if i have any problems down the line.  if the map causes any issues or directly results in parts getting damaged then they will sort it which is good peace of mind

would really like to know what you guys would have done differently?

also got them to inspect the rear PCV before we started which is good news!!

at the end of the day i dont think they would have put the map on if there were any problems so we spent a good few hours making sure the car had no issues with it, again checking fuel pressure, boost leaks, MAF and replaced the fuel filter!

the question is i guess why was the ECU requesting more fuel than it should be, under map and at stock map...

[john_o]

i think the postion both myself ansd whiteGTI were coming from is the underlying issue has not been fixed.
We didnt expect you to do more, we expect whomever is investigating to find the route cause, rather than workaround the issue.
I can fully understand why you have decided to do what you have  , in the end sometimes compromises have to be made.

consider this , if in the future for some reason the 'fault' is inadvertantly 'fixed' , potentially your custom remap will now be far too lean and need recalibrating back to a 'normal remap'...... (I dont know if the remap adjustment of your fuelling is done on a % basis , or by absolute values?)

now  , it works , you are happy with it , and I presume the working parameters of the engine are ok AFR etc.
now go enjoy 

[WhiteGTI]

^^^ Exactly what John_o said! 

I'm happy that you've now got a working car, enjoy it, no doubt you will absolutely love it! As i live relatively close to you no doubt we'll pass eachother on the roads soon!

 

[joesgti]

glad you got it sorted! sounds like a right ball ach!

 

[illyun]

As above, a sensor is more than likely playing up or you have a boost leak. If it's over-fuelling across the rev range then it could well be a MAF or lambda sensor.

it is only running super rich past 3500rpm to the limit

Very interesting  - sounds like the exact opposite to my issue which is fuel too lean past 4k rpm