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  1. 20vseven

    Water injection - before and after results?

    I have upped the boost on my M90 supercharged 1uz from 7 to 11 psi. Good improvement in torque and power at lower revs but this falls away markedly above about 3500 rpm. Peak power before was 190 kW, now 200 rwkw - about the same as a stock LS1 on the rolling road I used. I believe the reason...
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