Performance software is a must-have upgrade on your E46 M3 and you won't find an easier and better software solution than the Shark Injector. This device plugs into the car's diagnostic port and flashes new performance files into your car's engine computer (ECU). There's no removal of the ECU and shipping, no cables, no laptop required - only a battery charger! Installation takes just a few minutes and your engine will perform like never before.
Sorry, there are no products available.