Whats the max boost on stock vs 1.5lb pulley 4.2 2008 xkr

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07-01-2016, 01:30 AM

AlexJag

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Whats the max boost on stock vs 1.5lb pulley 4.2 2008 xkr

I got a 1.5lb pulley installed 08 xkr, stock tune.
Im seeing the max peak of 11psi, (using torque app for monitoring)
is this boost lower than it should be?

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07-07-2016, 05:03 AM

User 070620

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in my 4.2 i'm at 14.8 PSI with upgrade upper + lower pulleys

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