Merkin

all lightening would do is reduce drivability

Don@STaSIS

and yes it can allow for more vibration. The biggest issue I have with my 20v motor is the weight of the flywheel. Shifting takes forever unless I rail on the drivetrain. I would love a lightened flywheel in the 90, closest I've experienced was a Quantuum Synchro wagon with a very lightened flywheel, it was great, it felt way better than my 90 when it came to shifting, it was almost too quick, but that's something I prefer. Each to his own.

Cheers,

squidix9

And if you want rev's it has much more effect probably than most chips on an otherwise "stock" motor. For the cost too, it probably gives you more bang for the buck.