Tunning
 

I have 06-1287 SC with comp cams, 39lb, injectors, 3'' under pulley, GT500 fuel pump, SCT X3 tuner, NO cats with 4:10 gears. I believe stock Saleen mass air flow sensor. Need help with a new tune. Bought the car like this. 1st and 2nd gear is like being in a rodeo with some back fire every now and then. 5th gear falls flat struggling to figure out how much fuel to throw at injectors between 45-55mph. I have the tuner. I live in Fredericksburg Virginia. I don't think it was retuned after the cats were removed.