MSD 2-Step Launch Master Module for 1999-2004 4.6L Mustangs.
This 2-Step 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. A handy LED shows when the launch rev limit is active. Adjustable rpm from 2K to 9K in 100 rpm increments. Easy to install. Does not require an ignition box.