We’ve fitted our BMW E46 M3 with Supersprint stepped headers, full Supersprint exhaust, and paired it with a custom Evolve ECU tune — now it’s time to hit the dyno and see the real gains.

The naturally-aspirated unit received a compressor kit and other upgrades, resulting in an output of 567 hp (423 kW / 575 PS) which is far more than the 338 hp (252 kW / 343 PS) of the stock E46 M3.

This BMW E46 M3 Convertible has only been driven 30,000 miles since new and looks to be ... New BMW M3 Touring Is Just Too Quick For The Audi ... Read full bio. Load more comments. Follow Us ...