i know this has been said before but i would like to know how much boost i can run with a head shim on my apex on stock fuel then 50/50 safe then straight race fuel thanks guys
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here ya go heiny
all you need is to figure out CRatio and it seems to be pretty acurate you can punch in all your #'s to figure out HP, boost, octane, and hp loss for elevation.
http://www.toyzfortrucks.com/boostcalculator.xls
Is it just my comp or is that sight down right now?
Works for me?