Then to achieve the desired power output, we added an Active Autowerke Gen-9 supercharger system featuring a Rotrex C38-92, Active Autowerke water/methanol injection system to keep the air charge consistently cool, all breathing through a CORSA Performance exhaust system. Then, we moved on to compliment the new power output with handling & braking characteristics to match, with a Wilwood Disc Brakes front & rear big brake kit, KW suspensions Variant-II coilover set with Turner Motorsport caster/camber plate, Turner Motorsport front/rear subframe & chassis reinforcements, with all the OEM BMW mounts, bushings, and miscellaneous components to bring it all together.

Once John wrapped the mechanical work in the shop, she hit the rollers to get dialed in! With the Rotrex generating ~6.5psi of pressure, power output increased to 454.54whp & 303.92lbft on 93 octane! Gains of 202.30whp & 133.71lbft at redline, with strong gains realized all across the powerband. With every major area addressed but the SMG system -- the future failure of which Donald plans to use as an opportunity to perform a Getrag 420G 6-speed swap -- this E46 is sure to keep Donald smiling for another 165K miles! Once the 6-speed swap is performed down the line, we'll be turning the wick up to see just how much headroom we've got. Stay tuned in the future for more to come from this E46!