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Old 10-28-2010, 03:39 PM   #4
WagonMafioso
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Member#: 222641
Join Date: Sep 2009
Chapter/Region: MAIC
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Quote:
Originally Posted by 07ImprezaMB View Post
You would never get away running that much boost on stock heads with stock cams. You would only be able to run 10-12 psi with upgraded pistons. In order for you your heads to run more boost you would need to upgrade your cams and valvetrain.
You can run 12+ boost with stock heads, subies out there running 20+ boost, and I am going to run soon 18psi on my SOHC heads, the limiting factor is pistons, NA pistons just don't cut it for boost.
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