Steve Dinan founded the tuning company 36 years ago. Dinan has over 158 dealers nationwide, including BMW dealerships, and is the only aftermarket tuner that offers a factory matching 4yr/50,000 mile warranty. Recently, Steve Dinan left the company to join Chip Ganassi Racing, but his name will always be associated with Dinan Engineering.

Steve and a software designer did a lot of trial and error until the car got faster which eventually led to a tuning business.

Steve sat down recently with /DRIVE to talk about the magic of ECU tuning. He also touches on the process of tuning a naturally-aspirated engines versus a turbocharged one. Dinan also maps its race cars like street cars – the logic is that most race cars are inefficiently mapped for full throttle only. When a driver hits the gas pedal, Dinan wants to make sure that no fuel is wasted.