I also did my ign timing based off trap speed. I knew i was on the conservative side so i wasnt scared of adding.
I went from 118 to 124mph in the 1/8 with 4 degrees.
328i Sedan Twin s366's, 6.0LS, TH400, MS3 Ultimate
9.20 at 150 on 22psi
Did you guys get to the point where you added timing and lost trap speed, or just got to the point of diminishing returns?
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