i have a 3rd gen and i recently put a full xhaust system on my 7 other than that and a greddy bov its stock. While driving i was in 5th and at about 3k and floored it and the car made a stuttering sound, im not sure but i think it has something with the feul system and before my full exahust nothing was wrong. I was wondering if any1 has run into the same issue or can anyone help me.

 

Were you watching your boost gauge? I'll bet your new full exhaust has the car overboosting and hitting fuel cut. Run a search on midpipe and boost and you should find plenty of info.

Putting the main cat back in will probably alleviate the overboost and fuel cut. Consider yourself lucky that all you need to buy is a boost gauge, and not a new motor.

Dave