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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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I'm now on my 2nd map update from Ed and I'm holding up to 17.5 PSI with the normal taper up here. But I think my gauge may read a touch higher than the ECU's boost sensor. Anyway, my boost is holding solid till it tapers above 6K RPM's. The car feels super fast and smooth. I just hope this isn't dangerously high boost. I love my car and would never want to hurt her.