SprintBooster is a do-it-yourself performance enhancement module that can greatly improve throttle response in your Jeep® Wrangler JK. SprintBooster works with the “drive-by-wire” electronically controlled throttle system. The module sends an improved signal to the ETC (Electronic Throttle Control) which is amplified or “boosted” so that throttle is noticeably more responsive throughout the entire rpm range. Simple plug-N-play installation requires no drilling splicing or vehicle modifications. Installs above the accelerator pedal in minutes. The included wired pendant provides selectability between 3 different acceleration programs. With pendant LED light off, factory setting is maintained. Green LED signals moderate acceleration gain while Red signals an aggressive setting. The programs can be changed on-the-fly so the driver has the ability to switch between the different programs while driving. Two Year Limited Warranty.