MSD Performance Ignition - 99-10 Mustang GT 2-Step Ford 4.6L Mod Motor

Easily set a launch rpm for consistent holeshots * Connects to the factory coils for easy installation * The best way to launch hard The Launch Master connects right to your late model Ford to produce consistent launches and quicker 60-foot times by setting an rpm limit to stage with. When activated, the rpm will be held at a steady rpm and once the green light comes on, release the clutch and take off - but be sure to hold on! The rpm is adjusted with two built-in rotary dials ranging from 1,800 - 9,900 rpm in 100 rpm increments. A handy LED shows when the launch rev limit is active. Ford Launch Master (PN 8734)* (Note: For use on Coil-on-Plug systems only.)