The early reports on how much power the S55 engine on the new M3 and M4 models stunned us. We knew that usually BMW underrates its engines by today’s standards but still, the difference noticed on ...

LCI E39 M5 in Sterling Gray over black, Dinan Stage 1 tune & sway bars, 6-speed manual, clean-title three-owner example with ...

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 ...

BMW’s souped-up “M” cars are focused pieces of machinery that enhance every aspect of the original donor vehicle’s dynamics—from engine and suspension to chassis and brakes. But for drivers who are ...

Today's Nice Price or No Dice M3 has added performance by way of a bunch of Dinan upgrades plus a factory hard top to keep it all under wraps. Let's see if the specs and the price have you all ...

The time has come for Dinan Engineering to release a Stage 2 kit for the N55 3-liter inline 6-cylinder engine from BMW. Even though Steve Dinan, the founder of the company, is no longer overseeing ...