Originally Posted by tigermack
I had it on my Mazda3, it definitely helped. But... after driving on an OS Giken on a Mazdaspeed3... I'd rather spend more money for a diff that works significantly better.
Nothing compares to the OSG clutch diffs, they’re just outstanding for track purposes. They cost several times the product in question, and still about twice as much as a Wavetrac.
The company in question is new to BMW, but not at all new to limited slips. Product seems quality but why not let the group buy folks see how they like theirs. Should have a good number of products on the road in the next month or two. If reviews are good I’ll be buying one for sure, $1K for a proper limited slip is too good a deal to pass up.