Phil took a trip to see Greg Gush at Protuner to see what his V10 powered M3 would make. Protuners Dyno is notoriously difficult to make big numbers on, and Phil said before going that he'd be happy to come away with 500bhp. It turns out the car stonked to 538bhp on it's very first test run, and left Protuner with 545bhp and 441 ft/lbs of torque. Some seriously impressive numbers for the high reving V10 powerplant.
Check out Protuner here: protuner.co.uk/