Ok here is a simple formula of how to figure out your crank hp after you dyno:
FWHP divded by remainder (if 20% is the loss then 80% is the remainder, so you would divide by .8)
sticking with the 20% loss,
you dyno 100fwhp
100/.8 =125
Like I said above 18% is a little more accurate
so if you dynoed 100fwhp
100/.82 = 121.95
my last good dyno pull was 293.6fwhp
293.6/.82 = 358.05
See how that works?
now to go the other way you would
take your crank hp and multiply it by the % of loss then subtract the answer from the crank hp number to get the whp.
BHP-(BHP x %) = WHP
358-(358 x .18)=294
-Mark
