Founded in 1979 by Steve Dinan, Dinan is widely regarded as the premiere BMW tuner in North America, with a product line that now extends to MINI and Mercedes-Benz. From ECU software and turbocharger upgrades to intakes, exhausts, and suspension, every Dinan part is engineered to deliver serious performance gains while preserving factory refinement and reliability. Dinan products are backed by an industry leading warranty program that matches new car coverage, which is why they are sold through a nationwide network that includes authorized BMW dealerships.