DI Driver-4Discover the next evolution in engine tuning with our advanced Direct Injection (DI) control module. The DI Driver 4 is a highly configurable, cost effective and integrated solution, designed to give you full control of most modern solenoid type direct injectors and high pressure fuel pumps. Each DI Driver 4 module can allow up to four high voltage peak and hold solenoid Direct Injectors and one high pressure peak and hold Fuel Pump to flow up to