All Things Mk5 > Mk5 General Area
whoosh.....stutter........CheckEngineLight! [fixed pg5]
RedRobin:
john_o:
to be fair I always used to run VPower or Optimax , but after 1 tank of Tesco 99 I could definitely feel and see higher peak boost with that. So i stayed with it.
Now however I may mix the three
john_o:
story as yet not written ......................more CEL's on different fuel..................more info to follow
bacillus:
Sorry to hear about this again mate!
Did you scan with VCDS?
john_o:
Awesome are on the case. And have been nothing but helpful , Jims a top guy :happy2:
Initially my continuing faults were cylinder 3 misfire BUT on actually logging the car actually shows misfires on all cylinders.
Of which the main problem is that at high rpm the requested vs actual drops off significantly (although not to fuel cut levels) but enough to trigger my misfires. :surprised:
The problem is that the car should have enough capacity to deliver this, so I have an underlying problem that means my car cant.
Obvious starting points have been new std rail pump / PCV etc , none of which have helped.
std rail is 110 bar , with APR software requesting 130ish (to maintain AFR levels for the EGT temp)
Usually low rpm is the problem area!
Next steps are looking at the fuel system from rail to tank , filters etc. And to see if I have some cr*p at the bottom of my tank.
Its could also be an injector problem (I have seen S3's on audi sport with high rpm misfires!)
Its an unusual case , esp as my car ran like a train 2 days after the remap at Prosport under load several times to the redline (no fault codes!), go figure :chicken:
out of all the remapped cars it did have to be mine thats a 'problem' child :sad:
Anyway I have every condfidence it will be resolved soon.
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