Originally Posted by oledoc2u
The mani's create more volume for more boost. Without a pulley, you are still at stock... So, pulley and tune, or pulley, mani's, and a tune...better yet...it's only $$$$$$$....
so does that mean the mani's limit boost or the pulley? or is it determined by both? so if you had a 185 pulley making 28psi it could potentially make 30psi with the upgraded manis. Learning slowly so be gentle
Cheers,
Michael