Quote:
Originally Posted by RyanDavies
Strictly changing diff bushings is a giant upgrade. While I changed to the AKG bushings in my STX car, the OEM bushings allow you to pry the rear subframe around almost an inch of total movement. It's just as weak on the vertical axis as well. This comes out in practice by making it a second mass-damping motion, which means that the rear will easily get out of phase with the front of the car over bumps. The M3 bushings are a drastic improvement, but more challenging to install than the AKGs. The AKGs make zero noise at all, and the ride quality is drastically improved over the stock bushings. This is an upgrade I would absolutely do to an even street-purpose only car, but absolutely to anyone who cares about performance as well.
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Thanks for your input.
Differential bushings make that big of a difference? I know the subframe bushings do (I currently have poly inserts) but was mostly doing the diff bushings since I'm changing the diff and will be in there anyway.