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Originally Posted by BAN SUVS
Yes. Research the difference between pressure ratio and absolute/relative manifold pressure. Compressor efficiency maps don't read in "boost" they read in air flow vs. pressure ratio. Exceeding the most efficient pressure ratio at a given amount of power produces excess heat and puts tress on your turbo's internals.
Edit: 17 psi up here peak, tapering to the normal 12-13 psi at redline, is probably okay. Not as efficient as that curve is at sea leel, but probably not dangerous either.
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17PSI? I'm at a steady 20.