Professional EFI Systems (ProEFI) specializes in newer vehicles while still paying due attention to some older platforms. This is a state-of-the-art ECU when it comes to your newer vehicles such as GM LS equipped vehicles; allowing for the full funcitonality of the stock CAN-BUS system (gauges, steering controls, traction control) all while allowing us to far surpass the limitations of the stock engine computer. We carry a selection of ProEFI ECU's, sensors and harnesses in stock for various applications.