Thread: GenV intercooler low on boost

ok just installed the genv supercharger and stage 2 intercooler so the mods are as follwed 1.9 roller rockers, 105lb springs, 42.5 injectors, headers, full exhaust, cia, pcm, mps ok i have the 3.2 pulley on it to scan it i have like 16 lbs of vacuum but im only making like 9lbs of boost with the 3.2 pulley does this sound right with it having a intercooler new to the intercoolers runs strong just seems a little low on boost being i was running 12 on a 3.4 on the gen 3 with no intercooler

Because an intercooler is technically a restriction.

And rockers/headers help flow.

I saw 11-12 on a 3.0" with no intercooler, but ported heads and a big cam. So, it sounds about right.

ok just checking wasnt 100% sure i mean it pulls harder just seemed low on boost and getting zzp on the phone is like impossible, also think i might have a little belt slipage

Try swapping belts if you want, but basically...when you are flowing better you aren't making as high of boost numbers. All boost is...is a measure of restriction. These motors tend to run great around 8-12 psi....so it sounds like if you aren't knocking, try a 3.1" or even a 3.0". Might help get the boost numbers up a little...but too much boost is just going to heat soak that IC and cause more parasitic loss from the smaller pulley.

How's that?

Originally Posted by bluegtp91

Try swapping belts if you want, but basically...when you are flowing better you aren't making as high of boost numbers. All boost is...is a measure of restriction. These motors tend to run great around 8-12 psi....so it sounds like if you aren't knocking, try a 3.1" or even a 3.0". Might help get the boost numbers up a little...but too much boost is just going to heat soak that IC and cause more parasitic loss from the smaller pulley.

How's that?

Marvelous

Thanks guy.

Knew I could count on you, bewbies.

The hoodz got yo back son

lmao thanks for the help lol