My JB Lightweight flywheel barely chatters. It doesn't chatter at idle at all. The SMG doesn't like it very much and I've had to relearn driving it. The weight does affect the software but it's not end all be all. The experience just isn't always pleasant. Sometimes I'll turn my car on and it'll slam the clutch instead of easing it and I have to pull the key out the N disappears. Downshifts above 4500 rpm are wonky. It searches and has a hard time finding the right spot. The automatic downshifting is twice as bad as it already was so anytime it drop to around 1400 rpm, I just pop it in neutral so my clutch isn't sporadically engaging and disengaging for a second.
All the SMG needs is a retune but no one actually does it. It's annoying because the CSL software is awesome. With a lightweight flywheel, it could be even faster. The market to pay for R&D just isn't there. You also have to tune the DME along with it to avoid misfires.
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I recently had the SMG to 6-speed swap on my M3 and to be honest, I wanted to upgrade as well since the tech was already inside there. After hours of research, I went OEM for the clutch and the flywheel.
My car is built for the street with spirited driving around Northern California. I don't think there was a positive review for any flywheel at the time, they're all super chatty when idling and I wasn't willing to deviate from an OEM+ build. I figure the BMW tech's chose a dual mass flywheel for a reason.Leave a comment:
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SMG Lightweight Flywheel Options?
Clutch is giving out and considering the possibility of a lightweight flywheel. This product seemed the most promising, anyone use it before?
In general are there any recommendations/pros/cons for a lightweight flywheel on an SMG car?
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