MSD GM Gen III EFI Control Harness

Last year, MSD introduced the Gen III LS-1/LS-6 Ignition Controller, PN 17-6010, which was designed for engines being retro-fit with a carbureted intake manifold. This year, their engineers have come up with a wiring harness that allows the Controller to be used with the factory EFI and coil assemblies! The Harness, which connects inline to the factory sensors, allows you to program an ignition timing curve, a step retard for nitrous use and select a two step rev control to help with consistent holeshots. You can even program a boost timing curve if you’ve fit your engine with a supercharger or turbo.

All of these features can easily be programmed via a laptop through our Pro-Data+ software.