maximusx360

Over boost
Hello guys! I have a situation and I don't why I keep having it.I have a 2005 Audi A4 1.8T (AMB engine code).Currently,the car is a STAGE 2+ and was flashed this past July with UNITRONIC software.Based on the set-up that I have( FrankenTurbo F21L/exhaust manifold/440cc Bosch injectors/awe diverter valve/ 3" mass airflow housing/full milltek non-resonated sport exhaust).UNITRONIC recommended me to have a MBC(manual boost controller),which I did.They also told me that the N75 valve has to remain plug ELECTRONICALLY but CANNOT be plumbed into the system,which was done as stated.But for some reason,I keep having a code/check engine light for (over boost) .Anyone had this issue before & got to resolve it? Any helpful ideas will be very much appreciated.Thanks in advance.

transman

Has the code been popping on since the stage 2+ flash, or just started coming on recently?

maximusx360

Hey bud! Sorry for super late reply.I had a little password issue and i had to send a request to reset it.I finally got a chance to reply to your last post.Yes,the code been popping since Unitronic flashed the car.I had the boost set 18LBS and cranked it down to 12LBS.Ever since i cranked it down 12LBS,i haven't got the overboost code.I thought the F21L(Frankenturbo) was good enough to sustain the 18LBS of boost,i guess not .