Lean Fuel Issues after 4k rpm on Revo Stage 2+ Ed30

[bacillus]

After reading posts over on the US forums re fuel trims out of specification, have they tried removing your Evoms intake and use the standard oem air box?

[jonnyc]

I have the Evoms MAF bend on my car with the same spec as Illyun and mine is fine.. I think people have suddently decided over there that the EVOMS intake is causing problems lol..

[bacillus]

I have the Evoms MAF bend on my car with the same spec as Illyun and mine is fine.. I think people have suddently decided over there that the EVOMS intake is causing problems lol..

Whilst that may be true in your case, the fact that in the reported cases, the fuel trims returned to within spec by simply changing the Evoms intake to the standard oem one after all other remedies apparently failed cannot be dismissed.

[illyun]

I have the Evoms MAF bend on my car with the same spec as Illyun and mine is fine.. I think people have suddently decided over there that the EVOMS intake is causing problems lol..

Whilst that may be true in your case, the fact that in the reported cases, the fuel trims returned to within spec by simply changing the Evoms intake to the standard oem one after all other remedies apparently failed cannot be dismissed.

I think I know which thread you are referring to.. is it this one?   http://forums.fourtitude.com/zerothread?id=4133620&page=1    It refers to a Neuspeed intake, but I think some guys with the EVOMS have had issues too.  Its really weird because it doesn't happen to everyone - like the OP on the thread says, thats its just his intake on his car that is playing up! 

[bacillus]

Yup, that's one of them.

Another one alluding to the problem is here, http://forums.vwvortex.com/zerothread?id=4348602

It would appear that the Evoms when used with the k04 suffers with turbulence from the intake at the MAF.

[illyun]

Interesting... problems such a b1tch that I almost know that swapping the EVOMS won't make any difference - the bl00dy car is jinxed    Maybe worth a try though 

[john_o]

The MAF readings are something JKM have already reviewed are they not?
If it was low (compared to another mapped ED30) then that could easily be pinpointed.
Interesting reading thanks bacillus  

[illyun]

The MAF readings are something JKM have already reviewed are they not?
If it was low (compared to another mapped ED30) then that could easily be pinpointed.
Interesting reading thanks bacillus  

Thats true... 

[jonnyc]

I have the Evoms MAF bend on my car with the same spec as Illyun and mine is fine.. I think people have suddently decided over there that the EVOMS intake is causing problems lol..

Whilst that may be true in your case, the fact that in the reported cases, the fuel trims returned to within spec by simply changing the Evoms intake to the standard oem one after all other remedies apparently failed cannot be dismissed.

Very good point, but if it was that problem then it would have showed itself the instant that Illyun ran the car with that intake.. Im pretty sure he had the Evoms on for quite a while before the car developed this problem.. Maybe Illyun can comment on this one?

[john_o]

re-reading back the MAF was disconnected and issue still persisted from Keiths report.
Heres also Keiths post on
http://forums.vwvortex.com/zerothread?id=4350097
also shows the MAF numbers again

Amazing how the req fuel pressure stays maxxed but the actual continues to climb
(usually this drops back down on prev graphs Ive seen). How can it still climb 2k rpm revs later when the specified is still 130 max ? 

[illyun]

Good point Jonny. The EVOMS was fitted in November but the fault codes - and resulting engine light - were only seen in February.  However, I am wondering whether my DIY S3 I/C jobbie had something to do with it although I can't see how    The fault appeared a few days after - basically I did the S3 job on a Sunday/Monday, dropped the car to VWR for the Quaife fit on Monday evening and picked the car up on a Friday.  60 miles into my journey, the engine management light came on.  A look at  VAGCOM on Saturday night showed the fault occured just before I picked up the car from VWR - probably on their test drive. Note... its a bit annoying that I have to explicitly state this, but this does NOT mean that I think VWR are in any way responsible!!!  My theory is that I c0cked up somewhere during the S3 I/C install - but can't for the life of me see how or where as great care was taken during the install, but this still didn't stop the rad fan cutting one of the coolent hoses when going down the strip at Santa Pod    I reckon something that I did maybe caused the damage next time it was driven hard at VWR when they presumably testedthe quaife.  

[illyun]

re-reading back the MAF was disconnected and issue still persisted from Keiths report.
Heres also Keiths post on
http://forums.vwvortex.com/zerothread?id=4350097
also shows the MAF numbers again

Amazing how the req fuel pressure stays maxxed but the actual continues to climb
(usually this drops back down on prev graphs Ive seen). How can it still climb 2k rpm revs later when the specified is still 130 max ? 

Thats right.. problem is Keith has written so much  and tried so much that everything seems to be covered    I'm sure he has other tricks up his sleeve but I just want to leave him to it now   

[MAT ED30]

i cant see it being down to the ic  nothing there to affect fueling  are all the pipe connected correctly?

[john_o]

indeed illyun theres only 1 person that can solve this now and its not us lot on a forum 
worth going back to std though on intake
cant see youve damaged it any way though. good luck 

[jonnyc]

i cant see it being down to the ic  nothing there to affect fueling  are all the pipe connected correctly?

When changing the IC do you go anywhere near any looms etc? To be honest, if it was loosing boost pressure somehow, that could in turn affect the MAF readings etc and throw the fueling out because the MAF is metering a different amount of air flow to what is actually making its way into the turbo? Could be way off but a though..