MSD 8733 - 2-Step Launch ControlRev Limiter - 2-Step - Launch Control - Adjustable - 1000-10900 RPM - 100 RPM Increments - Factory Connections - GM LS-Series - EachThis 2-Step connects right to your late model GM to produce consistent launches and quicker 60-foot times by setting an RPM limit to stage with. Designed for Manual and Automatic Transmissions.GM performance fans will be geeked to learn about this direct plug-in 2-Step Launch control. The unit is easy to install with factory style connectors for a splice-free installation. When you're staged, you can hold the pedal to the floor while the rpm stays at a consistent level producing consistent launches. 2 Step Rev Limiter for LSx engines Plug and Play Can Be Used w/24X Or 58X Trigger Wheels Brand: MSD Category: Ignition Emission Code: 4 Product Type: RPM Control Warning: California Proposition 65 Warranty: Manufacturer's Limited 1 Year Warranty