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Registered User
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 8,267
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Since there's air flow through the throttle body where the MAP sensor is reading, it will read a lower pressure than in the manifold. I'd trust the boost gauge since it's getting pressure from the side of the manifold where there's less flow.
Even at 1.0 bar, it's really excellent results.
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2014 Cayman S
2011 Cayenne Turbo
1979 930 (475 rwhp at 0.95 bar)
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