Originally Posted by distantpulse
12.3 @ 109-110 = LEAN up in the top gears. I would like to see the timeslip. You are probably really quick through the 1/8mile, then the car falls flat up top? You are probably leaning out at the top of 3rd and 4th gear due to the belt NOT slipping. It could have been slipping when they dyno tuned your car? Now its producing more boost, but not enough fuel to feed up top. Just some thoughts.......
this is what I was thinking distant because to achieve this ET you normally have slightly higher traps speeds, yes there was grime and belt dust on the supercharger while it was getting tuned someone made the comment that my belt looks like it might be slipping but the car pulled like a raped ape on the dyno and the track after the tune.