Re-Tune/Tune Update Wrangler Stage 2: Aftermarket Headers or

Stage 2: Aftermarket Headers or Cat-less Mid Pipes

This is our tried and tested Chop Pack for your Hellcat

This Performance Racing 180-Degree Thermostat is designed for a lower activation temperature that allows for the coolant to flow through the engine sooner

4L HEMI Engine

windows down and a soundtrack of engine rumble

Re-Tune/Tune Update Wrangler Stage 2: Aftermarket Headers or*ONLY FOR CUSTOMERS WITH AN UNDERGROUND TUNE ALREADY INSTALLED IN THEIR VEHICLE* Installed a 180 Thermostat, Throttle Body, or Other Mods? Optimize your vehicle with a Re Tune! Required if you purchased a tune over 30 Days Ago. Does Not Include Cams, Injectors, or Added Force Induction. For more questions, please email us at sales@undergroundtuningusa. com Does Not Include Burbles, Advanced Burbles, Super Burbles, Transmission Tune, Or MDS Delete This