Trying to rescue this poor gti.The car runs great, drivin like grandma. Sonn as it hits boost it cuts out and falls on its face. Feels like a bad misfire but i scanned it witha solus scanner no misfire codes. I just got this car from my brother who gave up on it,so i don't know much about it. it has a 3" downpipe,forge 007,and a tune.He put in new coilpacks plugs and injectors from ECS tuning,still have same problem.Any help would be awsome,sorry i don't have more info.