Thanks alot EagleMark I will try that and see if it works. I have one more question if you dont mind. My speedometer is reading wrong, I went to you calculator and inserted the new number into it and put the speedo scaler number into the tune and it is still off. Someone changed the gears before I bought the car, gps says 70 when speedo says 78 confused if I entered something wrong maybe? By the way car is a 94 Formula A4 with 3.42 gears and stock tire size. Thanks again for all your help it is greatly appreciated.