A high-revving, sweet-sounding V-8 is a marvelous thing, and BMW's 4.0-liter V-8 in the M3 is a prime example. The tuners at Dinan, however, weren't satisfied with the factory-supplied 414 horsepower and thus have boosted output of the car to a tire-vaporizing 527 horsepower and 407 pound-feet--more than the V-10 powered M5. Best of all, the new...read full article