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| Message: | I did the dyno BEFORE I installed the headers, hiflow cats, flywheel, etc. My car put 371.03 hp at the wheels and with 17% drivetrain loss = 447 hp at crank (NOT 21% loss as you mentioned). This number is for the Dinan supercharger regular version (NO intercooler) and Dinan muffler ONLY, EVERYTHING ELSE is stock. Please see the original thread below: http://www.m3forum.net/m3forum/showthread.php?t=104390 Dinan Supercharged E46 M3 Latest PICS Previous rides: E39 M5 | E46 323Ci | ||||