I had a comp g that I did the same thing to. You are going to need more than a tune though to keep it from knocking. You will probably need headers and a bigger pulley, or a cam, or an intercooler. Or switch to e85.
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I had a comp g that I did the same thing to. You are going to need more than a tune though to keep it from knocking. You will probably need headers and a bigger pulley, or a cam, or an intercooler. Or switch to e85.
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