This ignition replaces the stock EFI module on all 2001-2011 Delphi Fuel Injected Twin Cam, except 2008 and later Touring and 2011 Softail. It takes the stock connector that used to go into your EFI controller when you are converting from Fuel Injection to a carburetor. You just have to tape up the connectors for the fuel injectors, Idle Air control motor, Intake Air temperature and Throttle Position Sensor. As with all carburetor equipped Twin Cam the Manifold Air Pressure (MAP) sensor must stay installed and connected. This ignition is fully programmable for advance curve, RPM limit and so on, using the Twin Tec PC Link interface and the latest software. It does not get any easier!