So my brother is ready to modify his E46 BMW M3 SMG finally and he has a header and reflash in the works. Knowing it would make no sense to add parts before knowing where he stands before the mods, he decided to bring his BMW to TTP's Mustang Dyno 4wd to see where he stands. Expecting about 280-290 out of his inline six cylinder, he wasn't quite there but in the end was still happy with knowing where he stands as it sits right now untouched.

His numbers were 258whp/225tq uncorrected and 261.4whp/227.3tq corrected at 82*F, 63% humidity at seal level.