Well folks..

I finally did it... Installed that TurnerMotorSport light flywheel in my M3..

OK.. *I* didn't install it.. Wade Dalton, Ace BMW Tech did ;)

First.. the ONLY negative at all.. your nice quiet M3 trans will now rattle a bit in neutral.. like my old E30 325i did..

BIG DEAL..

Now the positives (for me)

Better Acceleration.. how much better I can't tell you YET, but my finely calibrated Butt Dyno tells me about 1/2 a gear..

2nd feels nearly like 1st used to.. etc..

I do know its a definite, feelable improvement over that dual-mass chunk of lead they call an OEM flywheel..

also, *most* of the hammering noise is gone.. those with M3's might note the clunk-a-clunk-a-clunk you get at low speeds and near closed throttle.. Its almost GONE with the lightened flywheel.. I think it was caused by rear suspension flex being translated thru the diff and down the shaft to the dual masses.. after THREE dual-mass flywheels I can tell you that it's NOT a "bad" flywheel.. they are ALL BAD and are not calibrated for that Motor/Drivetrain...

The single mass flywheel needs no "calibration" ... *grin*

IMHO, It's what BMW should have given us on our M-Cars..

Jim