Hello there im new to these forums. I need some help with my 99.5 A4, so i decided i'd check here. The car is quattro with sport package. Currently ithas a GTRS elim turbo, unitronic tune, test pipe, 415 injectors, 2.75 in exhaust, apr fmic, afpr, tip, vr6 maf. Down to the problem. Anytime my car hits about 10 psi its hitting boost cut, the tuning calls for somewhere around 20 psi. I replaced the n75 valve and i was no longer getting boost cut, but instead i was overboostin like crazy and the car would just keep boosting well into the 30's. Not long after the overboost problem i think i blew my n75 valve again because i cant boost past 10psi now. Up til 10psi the car is a beast but cuts so bad once it hits that mark. Should i get bigger injectors, or could my FPR be at the wrong bar? Any ideas or help would be much appreciated, and i look forward to being apart of these forums.