For returning customers, please enter your email and password to log in to your account.
This highly engineered and sophisticated DINANTRONICS™ Performance Tuner is a combination of computer hardware and software that enhance engine performance. Also, this accessory doesn’t negate or void your new car warranty coverage while maintaining the long-term reliability or the functionality of onboard diagnostic systems. This exclusive tuning device emission is legal in all 50 states. The design of this state-of-the-art technology provides the ability to control every signal entering and exiting the BMW factory Engine Control Unit. These exceptional items from Dinan embody the apex of performance engineering in a powerful, reliable, and warrantied package.