MSD Ignition 8734 2-Step Launch Master for 99+ Ford 4.6L/5.4L Modular Engines

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 ranging from 1,000- 10,900 rpm in 100 rpm increments. A handy LED shows when the launch rev limit is active.