Hello,
Hopping someone may have an idea of what could be causing this problem. First some background.
The car has a stage 2 AMD map and a Blueflame 200cel TBE. It is DSG KO3 GTI
I went to the recent JKM rolling road day and the car only made 234BHP (There were some stage 1 cars making more power than me)
The printout from the Dyno showed my air fuel ratio to be very rich. After the session at JKM i took the car back to AMD to see if they could see whyit was down on power and running so rich. A VCDS scan showed up a fault relating to the inlet manifold. The garage cleared this fault and asked me t return at the weekend to scan the car again. The second scan showed a CAT inefficiency error?
After the first faut code had been cleared the car started doing this strange boost bhaviour where it appears to boost too high then drop off and then back up again. Here is a video;
The video was taken with constant full throttle.
AMD has said that thiscould be something to do with the flaps in the inlet manifold, but i want to try and get some of your opinions before i start investigating into the wrong thing.
Oh and this does not happen all the time, sometimes i boot it and it goes to 21psi and holds it but more often then not is doing this as shown in the video.
Any help woud be much appreciated. Sorry for the long post
