HEMI 2-Step Launch Controller – Plug and Play – By MMX

You know that glorious “pop-pop-bang!” sound you hear from drag cars that makes everyone at the track stop and stare? Yeah — this is how you get that. The MMX Plug-and-Play HEMI 2-Step Kit is here to bring big-race energy to your driveway and consistent launches to the strip. Whether you’re chasing perfect 60-foot times, quicker turbo spool, or just want to make your friends jump every time you blip the throttle — this kit’s got your back.

Designed to work with all 2006–2024 HEMI engines (that’s 5.7L, 6.1L, 6.2L, and 6.4L for those keeping score), this kit fits any platform — Charger, Challenger, Ram, Jeep, Durango, or whatever else you’ve shoehorned a HEMI into. Automatic or manual, no problem. It’s fully plug-and-play, meaning no splicing, no soldering, and no stress. You’ll even get fuse taps for all three major fuse styles because MMX knows you’d rather be wrenching than wiring.

The control box can live in your glove box or center console — wherever you feel fancy. Once installed, simply twist the knob to set your launch RPM (anywhere between 1000–9900 in 25 RPM increments), hit the activation button, and let your HEMI sing. You can even wire it to a brake pedal microswitch or steering wheel paddle for that pro setup feel.

The result? Picture-perfect launches, faster spooling, and that unmistakable “I mean business” soundtrack.

Heads up: your vehicle will need to be tuned to disable misfire and coil circuit monitoring — pretty standard for any 2-step system.