kelleyperf
New Member
hey guys i have an important question. i have a customer with a 2003 harley davidson f150 who wants more boost. he currenty has: custom magnaflow cat-back exhaust, airriad cold air intake, diablosport tuner, and he THINKS he has an upper pulley of unknown size. this is the main issue, he bought it used, and he bought an aftermarket upper pulley and the one on the car ended up being the same size. surprisingly the store had no idea what size the pulley they sold him was, and i honestly have no idea either. im unfamiliar with these trucks, i drive a supercharged ss silverado RWD 
epper: . so lets say it has a 2.8" upper, and i add a 4 lb lower, will i need to up the injectors?? how much boost would that total? what does the harley boost stock, lightning boost stock? any help appriciated!!! thanks
epper: . so lets say it has a 2.8" upper, and i add a 4 lb lower, will i need to up the injectors?? how much boost would that total? what does the harley boost stock, lightning boost stock? any help appriciated!!! thanks 
