Originally Posted by Winston Wolf
My car made 239 HP on a mustang dyno stock. 239 (Dyno HP) divided by 300 (rated HP) = .796 Drive train loss
Flash Dyno was 302 (Dyno HP) diveded by .796 Drive train loss = 379 HP.
Max boost was 13.6 PSI
Mustangs read low anyways, which is why the gains shown are the relevant figure, not the absolute result.