Your Hemi Challenger makes amazing power but the facory has left some extra power in the tune.  Choose from several custom tunes and gain up to 20 rear wheel horsepower on the 5.7L Hemi and up to 25 on the 6.1L.  Plus, DiabloSport Intune also adds tons of features like shift firmness, adjust redline, adjust speedometer and much more.

F.A.S.T. products are designed for EFI performance.  Their single and dual band air fuel meters are a must have for any tuner beginner or pro.  Easy to use and connects to most professional tuners.

Add 15-25 horsepower to your late model V8 Hemi Challenger.  Choose between regular unleaded or premium fuel and tons of options.  Options like speedometer adjustments, clearing dtc codes, adjusting cooling fans and much more.  Not interested in changing the tune but you need to adjust your speedomter?  Try the speedometer calibrator.  Both options take minutes to install and return to stock just as fast. 

Bully Dog Performance tuners have the performance gains and monitoring features that you need for your SRT8 Jeep.  Gain solid horsepower and torque throughout the rpm band in minutes.  Bully Dog tuners also have amazing features such as performance testing, sensor monitoring and scan tool capabilities.  So grab the name you can trust in Jeep tuning!