zay52790

I recently got a ported and polished s/c and i had a 2.8" pully on it. It hit 17psi on the 2.8
More recently i swapped the 2.8 for a 2.6, but now I'm only hitting around 16psi. I have checked for boost leaks, and i couldn't find anything, but i plan to check again just to be sure. I cannot figure out what the problem could be, so if anyone could point me in the right direction it would really help.
As far as cooling goes i currently have it set up with a zzp s3 heat exchanger and the zzp single pass intake manifold

BLAZIN07SS

iTrader: (7)

check for any leaks post blower. particularly the SC gasket. and if not do the boost bypass mod to make sure it is not bleeding off boost

reddevil

iTrader: (1)

put the 2.8 back..

zay52790

what is the boost bypass mod?

07Slobalt_1

if you upgraded your exhaust recently, that could make your boost appear lower.

zay52790

yea but even with the new exhaust and stuff it should still be boosting more than 16-17 psi on a 2.6