Peak power is highest point in the curve, gain in power is the highest gain in HP anywhere in the curve when comparing pulls after mods.
Factory power, first of all, is rated at the flywheel and is PEAK power. So the Boss has 444hp PEAK at the flywheel...take out 12-15% and that is roughly the power at the wheels.
Hope this helps.
Thanks for explaining. I forgot about that. The factory 444 is crank where in the AM description they are claiming 60+ wheel HP so that makes the difference larger, but I guess since they are saying in the 60+ hp gain is across the curve and not the actual PEAK. Still a little confused, but I am starting to get it. haha
(11.)2012 GT500 silver with red stripe, SVT performance package, and Recaro seats.
2018 Honda Civic Type R
Past Mustangs in order and color of text.
(1.)2000, (2.)2004, (3.)2006GT/Auto traded for (4.)2006GT/Manual, (5.)1996, (6.)2011GT, (7.)2003GT, (8.)2006GT, (9)2013 Boss 302, and (10.) 2002GT
(I have owned a few non Mustang cars over the years as well, but always try to have a Mustang with it or come quickly back to a Mustang!)