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2009 Jeep Grand Cherokee Performance Chips & Programmers

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Latest Customer Reviews

Hypertech Max Energy Programmer Reviews


This thing unleashed the beast

Reviewed By Dan D (PLAINVILLE, CT) Reviewed for a 2009 Jeep Grand Cherokee —7/25/2016 8:18 PM

Huge difference in my 4.7 Grand cherokee...woke it up! this thing runs and gained 2 mpg in fuel economy. Only reason I rated ease of installation low was because I haD TO WASTE 15 mins updating it on my pc. for the amount of money I paid it should be pre updated. and its a bit pricey.

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DiabloSport Predator P2 Tuner Reviews


Predator vs. Predator

Reviewed By Adrian L (Boise, ID) Reviewed for a 2006 Jeep Grand Cherokee —1/18/2010 7:20 PM

I have a DS Predator for my Hemi Dodge Magnum, which I've had since they came out, and now also the new one for my Hemi Jeep Grand Cherokee Overland. The newer one (Jeep) does not provide as much flexibility as the older unit. I don't know why they (DS folks) did this, unless it was to keep novices from ruining their vehicles. You no longer have options for torque management, tranmission settings or ESP/Traction Control adjustments as with the earlier model. Other than that the unit is about the same and is very good. It offers WOT fuel and WOT timing adjustments, modification of the stock tune, as well as throttle sensitivity adjustment settings. Since the throttle on my Jeep was very touchy, this is a great feature to "tone it down", and adjust it so it has a smoother, less jerky operation. The DS also offers a 93 octane tune, which the competing unit does not. Most other features are similar to the unit from their main competitor. Overall, between the two (I have them both for both vehicles) the Predator is the best bang for the buck, IMO.

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Bully Dog GT Platinum Tuner Reviews


2012 nissan titan 5.6 flex pro4x

Reviewed By James B (MAYFLOWER, AR) Reviewed for a 2012 Nissan Titan —6/4/2018 11:13 PM

with the coldair intake, TB spacer and Bully Dog performance tune this SOB will run, hard to pass gas station, haven't tried other pretunes yet

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