Thanks for your input on the Wavetrac.
I love my 328i with 6MT but more power would be nice. I think changing the rear axle ratio is the best way to get more torque to the drive wheels, especially for those of us that live in the US that must comply (mostly) with low speed limits. Why not sacrifice some top end for more torque to the drive wheels throughout the range?
- better acceleration throughout the range
- keep entire car stock except the diff, which shouldn't affect any other components
- limited slip
- worse gas mileage
- more RPM while cruising on the freeway
- cost of upgrade