The M48 ECU takes the M4 concept a little further. It allows up to 8 High Flow Injectors in sequential firing mode. This is great for you 6 cylinder or 8 cylinder folks. Normally aspirated or turbocharged with nitrous, the M48 has you covered. In semi-sequential mode, the M48 can control up to 12 cylinders. The M48 ECU has been used to generate over 2100 Brake Horsepower from a twin turbocharged Small Block V8 on gasoline