Twintec Auto-tune Fuel Injection ControllerTwinTec Palm link interface cable The TwinTec Fuel Injection Controller (TCFI) replaces the stock ECM and works with stock and High Performance throttle bodies. Features: Real time continuous auto tuning with monitoring, control and override capability Utilizes high end Alpha N fuel control that eliminates dependence on manifold pressure and is unaffected by long duration and high overlap camshafts Programmable ignition timing and advance curves