Quote:
Originally Posted by SubieNate
But if the front brake calipers themselves are identical stock, it follows that an aftermarket replacement should work identically as well, to keep the same bias in the original vehicle would keep the same bias in the new vehicle regardless of the actual pressures involved. If the BR-Z is pumping x % less psi to the fronts, then if the calipers apply the same torque per psi then it should be fine.
Now, if the Wilwood kit is designed to be in a 4 wheel kit, then running without the rears could be an issue, or, if the rears are different on the WRX. But I'm not sure about that.
Nathan
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First, we have different rears from the early Impreza WRX so bias is already off. I believe we have 10+ Legacy rears or something similar. Second, piston diameter (or area) was not stated by the OP. I'm sure they're on Wilwood's site, but I'm too lazy to check. Third, related to second, we would need stock piston diameter/area of our brakes...which SHOULD be the same as the Impreza, but I'm not certain.
Note: it's possible the rear piston diameter/area hasn't changed from 2003 to 2012, but I wouldn't be sure about that.