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  1. how much more power does a 8 psi will give me compare with my 5 psi s/c

    5.0L Talk
    hi, i have a 88 mustang gt with a novi 1000 supercharger, is pumping 5-6 psi boost, and running 12.9 without tune, the questions is how much power would a 8 psi pulley give me, and how much will my time drop? will be strictly :happyhapp necessary to tune it? my engine was bore .40, with...