This stunning British Racing Green BMW F80 M3 just got a serious performance upgrade! Featuring Eventuri intake, CSF cooling, MSS suspension, and custom tuning, this M3 is now an absolute beast on ...

The F80 in the featured video isn’t stock, though. Based on the N55 engine, the S55 straight-six lump allegedly makes 480 to 490 horsepower and about 460 pound-feet (624 Nm) thanks to a minor tune.

Power builds and brutal sound as modified machines leave the meet: BRABUS 800 G63, ABT RS6+, AMG GT63 S, Audi R8 V10, GAD-tuned E63S, M3 F80, and Golf 8R roll out in style. #BRABUS800 #ABTRS6Plus ...

According to Drag Racing and Car Stuff, the Caddy also rocks aftermarket headers, a ported snout, and a different pulley for the 1.9-liter blower with a twin-screw design.

Compared to the standard F80 M3, the CS features an updated twin-turbo 3.0-liter straight-six delivering 454 hp and 443 lb-ft (600 Nm) of torque.

We’ll start with the exterior. BMW applied a ton of M Performance parts to the extra-American F80 M3, giving it a carbon front splitter, rear diffuser, mirror caps and side skirts.