Not sure which 2009 Jeep Grand Cherokee Performance Chips & Programmers are right for you? We have over 1725 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Michael S from Allison Park, PA said, "Diablosport is the handheld tune of choice for HEMI vehicles based on info I learned from various forums. I'm currently using it on my 2009 Jeep SRT8. If you have a CAI and run 93 octane gas then the best canned tune is actually the 91 CAI tune. You'll get too much knock with the 93 CAI tune. Also, crank up throttle boost to the max 20%. My SRT8 is running like a beast! Top of second gear pulls like a freight train and the shifts are nice and firm. Best feature of the inTune is that you can data log and send the files to a tuner who works at Diabosport who will email you back a truly custom tune for a nominal fee."
Year Range For Jeep Grand Cherokee Performance Chips & Programmers