well then i guess my automatic is killing me, also i'm running 225/55r/15 on dif rims, when i got the truck it had 215/75r/15, heres the other thing, they are different tires but my speedo is correct even at 75 and 80. THe tires should give me higher gears in the bak gettin me off the line quicker so why hasn't it helped me.
Me and my friends went down and taped off a 1/4 mile in a industrial park but was a lil tite so we jus ran 1/8th miles. clocked off a 12.7, this was wit an extra passenger.
n goofy guy wit ur stock setup how much were u boosting?