Review on 🚀 Advanced Performance Chip/Power Programmer for Dodge Challenger: 3.5L, 3.6L, 5.7L HEMI, 6.1L HEMI, 6.2L HEMI, and 6.4L HEMI - Enhance Fuel Efficiency, Save Gas & Boost MPG, Amplify Horsepower & Torque! by Michael Gonzales

Used on 3.6L Challenger. In a nutshell. DO NOT SPEND YOUR MONEY. I followed the instructions completely and carefully. Even after manually resetting the ECM, I still didn't see any improvement. No increase in performance or fuel savings. The return window is closed. I wanted to give this thing time to really "work" or take a break. Disappointed with a broken window product and such a small return window. waste of money!