Dinan S58 PCU Tuning Module for BMW G80 M3 and G82/G83 M4

Add adjustable power to your S58 BMW with the Dinan Power Control Unit. This external module connects between selected engine sensors and the factory ECU. It is not an ECU flash. Vehicle fitment 2021 to 2026 BMW M3 Sedan, G80 2021 to 2026 BMW M4 Coupe, G82 2021 to 2026 BMW M4 Convertible, G83 For vehicles equipped with the S58 engine. Features Five performance levels plus a stock setting Bluetooth control through the Dinan PCU app for iOS and Android Levels 1 to 3 for 91 octane; levels 4 to 5 for 93 octane Adjustable boost by gear, live gauges, data logging, and fault code reading and clearing Mounting hardware included Warranty and installation D440-0200 includes Dinan's two year, unlimited mileage product warranty. This is the standard PCU, not the Dinan+ version with factory matching coverage. Manufacturer terms apply. Professional installation is available separately. Emissions restriction Not legal for sale or use in California.