[joretogt]

Hi, recently I've been chasing an intake vanos spike problem that feels like a split second stutter/missfire when accelerating and seems to occur always around 5500-5700 rpm. The car doesn't throw any codes and apart from the stutter , drives perfectly and pulls very well under acceleration. Currently the car has a stage 2 tune in it, but I've also tested with the stock file (in order eliminate the st2 tune as a culprit ) and the spike is present with the stock tune also. The things I done so far to try and eliminate/pinpoint the issue are - changed the intake vanos sensor with a brand new one and I've swapped the intake/exhaust vanos solenoids (presuming that if it's the solenoid the spike would be logged on the exhaust vanos after the swap). At this point I'm thinking that there maybe it some signal interference or wringing problem. I'm attaching two logs of the issue and will be grateful for any opinions/pointers on where to look for the problem.

https://datazap.me/u/joretogt/f11-53...0&data=6-11-12

https://datazap.me/u/joretogt/f11-53...0&data=6-11-12

[joretogt]

I've resolved the problem by cleaning the MAF sensor. Thought I'd post it as feedback .

[ChiltiCoatl89]

Going to clean my MAF and intake valves soon, I don't ever want to overthink and worry about something that is easily misunderstood for something more expensive! very useful info!