so my car is stock 95 z28, a4 , what stall?? 2400 i want something i can actually feel a difference in......thanx

 

2800

 

2800-3000. Don't go any higher unless you want to get a tune to fix the shifting problem you'll have. Don't go any lower cause you'll just wish you went higher anyway. In less than a week it'll feel like it drove before the stall. FYI 2800 is the most recommened for our cars.