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Old 04-10-2013, 02:30 PM   #46
Equilibrium Tuning
Former Vendor
Member#: 26933
Join Date: Oct 2002
Chapter/Region: BAIC
Location: Fairfield, CA
2006 STI


Well at 23psi, we're at about 73psi rail pressure. Anything about 75psi rail pressure, it drops off on the top end. And this turbo flows a lot of air at this boost level, so I think it has more to do with flow than overall pressure. Are you running on E85?

-- Ed
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