Pretty awesome bench racing tool
I know, I know, but I've "tested" this using real dyno results from several different builds -- for each one it was very, very close to the actual results (and the differences can easily be marked up to the fact that it doesn't allow "turbo" for boost sources, so is stealing a bit out of its calculation for spinning a cent s/c).
It's also fun to play with camshaft specs and see what happens. You know, like putting in funny car .006 specs with daily driver .050



