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Discussion Starter · #1 ·
I’ve tried finding ways to fix this but most people just call 20 psi on an m62 bs. I just got a 2006 cobalt SS supercharged a week ago and it makes 20psi on stage 2 from zzp with a 3.0 pulley. How do I make it make less boost? Zzp said my exhaust might be clogged up but it’s straight piped.
 
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