For those who have ported and polished the M62 via Steigmeier...how much more psi did you get?
Thanks!!
Eh...old man with a Corvette now...it was bound to happen sooner rather than later right?
I have read on cobalt ss that when you port a supercharger it decreases boost but it hits the boost level right away rather then building up to it. so im going with maybe a loss of maybe 2 or 3 psi. however this is on a m62
its not so much as porting out for boost gain, you open up the outlet (i think its called that) and that gets the boost through the manifold faster.
