HI i was wondering if it makes a difference if u change the upper or lower. I am going to change the lower pulley, someone told me that u will only get 1 pound of boost by changing the upper pulley. Will u get more hp by changing both
Originally posted by philip
stick to changing the lower pulley. you will have less belt slip (if any overall) more belt surface area. there is also lower pulleys from 2-10lbs of boost
Originally posted by ford_lightning
HI i was wondering if it makes a difference if u change the upper or lower. I am going to change the lower pulley, someone told me that u will only get 1 pound of boost by changing the upper pulley. Will u get more hp by changing both