Quote Originally Posted by gtpwannabe View Post
not trying to thread jack but why do you lose boost after headers? loss in back pressure or?
Increased engine efficiency = less boost. That's why we pulley down in the SC world...to get back the boost we lost during increases in efficiency. We do NOT go to a smaller pulley just to increase from say 8psi to 14psi...because you really gain nothing from that other than KR with the SC.