ok when i first got my screw stock i could out run the chevys not a 1 could beat me till i hit the 30,000 mile point and it was like some one tied my bumper to a telephone pole i mean the power just droped off like over night i now have a kn fipk kit what the hell could be wrong and what could i do to get my power back
ohhhhh I hade a 40 series flomaster on it too... could that have of robed power????? please HEELLLPPPP