ITG maxogen - new enclosed filter information.

[gigolo456]

I do sympathise with you Jedi. I went to R Tech roughly same time last mth, literally a few days after having a BCS Exhaust system and Twintake! I too have a whistle with mine sumtimes, although not as prevalent as yrs by all accounts! I was told by Nick that my average mpg should improve, and sure enough, plodding along I can get it up to 33, 34 perhaps, but give it sum right foot, and bang, down she goes swiftly! I think thats y Nick wants us bak a 2nd time, so he can perhaps adjust the fuelling accordingly! Lets face it thou, our cars are much faster now, so of course we will notice a drop in fuel efficiency, lol!! All this is so subjective IMHO, if we can somehow prove that a stock intake, plus a TBE, plus remap stage 1 or 2 = more power than above with aftermarket air intake, then I shall revert bak instantly!? Im bak with Nick on Saturday wk, so mite take all my stock intake with me, compare it with my Twintake, but these debates do really thrill me!! ;-)

[chungster]

I've kinda accepted the avg of 27-28mpg my car does nowadays. But it's been around that level from day 1. Never been near te claimed combined 35mpg average by VW! 

[badbwoy27]

As Ive said b4 itg and pre cat delete added 17 bhp to my car at stage 1 so wouldn't say there's nothing to be gained.

[gigolo456]

Is this 'pre cat delete' physically removing something from the full TBE or am I missing summit here?? :-o

[badbwoy27]

I also don't get the whistle that others are on about with itg and never have heard it. If I haven,t got this whistle this must mean it can be stopped

[jedi-knight83]

I do sympathise with you Jedi. I went to R Tech roughly same time last mth, literally a few days after having a BCS Exhaust system and Twintake! I too have a whistle with mine sumtimes, although not as prevalent as yrs by all accounts! I was told by Nick that my average mpg should improve, and sure enough, plodding along I can get it up to 33, 34 perhaps, but give it sum right foot, and bang, down she goes swiftly! I think thats y Nick wants us bak a 2nd time, so he can perhaps adjust the fuelling accordingly! Lets face it thou, our cars are much faster now, so of course we will notice a drop in fuel efficiency, lol!! All this is so subjective IMHO, if we can somehow prove that a stock intake, plus a TBE, plus remap stage 1 or 2 = more power than above with aftermarket air intake, then I shall revert bak instantly!? Im bak with Nick on Saturday wk, so mite take all my stock intake with me, compare it with my Twintake, but these debates do really thrill me!! ;-)

I fear this is straying off the original subject so may start my 33rd thread on intakes....  

Basically like I said the enclosed canister seems to do its job and silences the darth vader noises which still producing the same airflow.

The problem I have is separate to this issue and is with the ITG as a whole (possibly intakes in general.. I wont know till I test the twintake).

Why some people get the whistle / screech noise and soe dont is puzzling.

The intake is also solely responsible for a 5+mpg drop on a cruise as far as I can tell. I ran the stock airbox after the R-tech map and all was fine on a cruise seeing low 30sMPG and even when 'testing' the map   It didnt drop below 25mpg average for a fast journey.

My car seems not to be adapting to the extra air very well though hence its poor MPG numbers after fitting the intake. Maybe this is something that Nick changed on my car and it worked well with the amount of air it had at the time.. maybe not?

I prefer low down torque though and I think my preferred option is now to get the car running as nicely as possible on the stock airbox regardless of if the ITG ends up giving an extra 5-10 bhp once Nick has re tweaked the map to suit it.

Id rather sacrifice those few extra BHP and have the car torquey from as low an RPM as possible and not have to endure the embarrassing whistle / screech.

[jedi-knight83]

Is this 'pre cat delete' physically removing something from the full TBE or am I missing summit here?? :-o

its knocking out the cat material that sits right in the opening of the top of the downpipe.

I did this and then ran the car for 100 miles or so, so I am sure this in itself did not cause the poor mpg or whistle / screech. This is confirmed when I refitted the stock air box the noise disappeared and the MPG went back up.

[Marshall]

As I've said I've tried most intakes including twintake and the itg on my last k03 car and also my current k04 car.
All I can say is for some reason the noise made on the k03 car was much noisier and annoying than you get on a k04.
The whistling screech noise I always experienced with my itg and pflow from memory and I'm sure it was approx 3000 rpm.
At the time I done some research and found lots of info on the fitting and that how far you positioned the silicone joiners over the pipework caused the noise in question.
To be fair I played around with my itg and I did get it better but not perfect.
As for mpg on normal driving my mpg never altered but when driving hard and also in winter months mpg does drop by 2 or 3 miles.


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[jedi-knight83]

As I've said I've tried most intakes including twintake and the itg on my last k03 car and also my current k04 car.
All I can say is for some reason the noise made on the k03 car was much noisier and annoying than you get on a k04.
The whistling screech noise I always experienced with my itg and pflow from memory and I'm sure it was approx 3000 rpm.
At the time I done some research and found lots of info on the fitting and that how far you positioned the silicone joiners over the pipework caused the noise in question.
To be fair I played around with my itg and I did get it better but not perfect.
As for mpg on normal driving my mpg never altered but when driving hard and also in winter months mpg does drop by 2 or 3 miles.


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I did actually wonder if it was to do with air hitting the end of the pipes, but I tried moving them around a bit with no luck.

Also it doesn't explain why the noise happens on KO3 but never (very rarely) on KO4 when its the same pipe work.

[gigolo456]

Wat on earth is the cat material, lol?

[jedi-knight83]

Wat on earth is the cat material, lol?

http://www.mk5golfgti.co.uk/forum/index.php/topic,41083.0.html

[Marshall]

I did actually wonder if it was to do with air hitting the end of the pipes, but I tried moving them around a bit with no luck.

Also it doesn't explain why the noise happens on KO3 but never (very rarely) on KO4 when its the same pipe work.
[/quote]

Yeah I know exactly what your saying it strange why k03 cars are noisier than k04s
Doesn't help you though.



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[56OctyVRS]

All this is so subjective IMHO, if we can somehow prove that a stock intake, plus a TBE, plus remap stage 1 or 2 = more power than above with aftermarket air intake, then I shall revert bak instantly!?

I dont think its a case of more power, its a case of engine response.  My engine performs better with the OE intake than when I had an aftermarket intake fitted on a stage 2+map. Sometimes more BHP is not the best, as it is how responsive the engine is.  The intake moves the power higher up the rev range so you have to rev it more to get the best. I found the intake on the car actually dulled the driving experience, as it felt flat at the bottom end and not very quick. I take the approach that MINES do with their cars.  Not going for big BHP but going for a car that is responsive.

[R-tech-Nick]

There are no adaptions to really take place,  when fitting a induction kit.  Blocks 032 will show the trims and I am sure they will be well with in 10%+/-

The issues with induction kit is its allowing the turbo to spool faster on part load/throttle (part throttle speeds up air flow via the turbo)  driving and the ecu is adding the correct fuel to meet the lambda value of 1 for light load driving.  You wont find the car over fueling or running rich.

Just long term driving at part load the MAF is seeing more air per cycle and more fuel is needed.  nothing much can be done in the mapping as the map at part load will already be at lambda 1.

The fuel maps only change at.

1, when runing evevated egts under full load over x amount of load.   (at  the extream these maps run LEANER close to .81 vs the .71 stock
2, 90% load request over 3000rpm the lambda will come down to .89 for the torque band and .83 from 4500rpm for the power band.

So part load driving 0% upto 89% load request the ecu is set to lambda 1 upto 4000rpm then 4000rpm to 6520rpm .95 to .90.

The only way around it is go for a 1:1 ratio linear throttle map trying to reduce part throttle load request,  We have done this with a few Focus STs and gained around 50miles extra per tank. 

[gigolo456]

Couldnt agree more Nick, lol!!