FAST's XIM Standalone Ignition Controllers let you enable programmable control of the late model coil-per-cylinder ignition systems, independent of the fuel delivery method or any factory computer. The standalone XIM can be custom tuned as desired with the easy-to-use adjustment dial pots. This bolt-on solution to coil-on plug ignition is the easiest and most reliable way to run a carburetor or EZ-EFI.