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2003 Jeep Grand Cherokee Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Module Reviews


Jet Chip

Reviewed By Dennis S (Miami, FL) Reviewed for a 2003 Jeep Grand Cherokee —9/23/2009 6:23 AM

Amazed at the instant horsepower gain. Gas milage is better. I will order one for my wife's mustang.

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Hypertech Max Energy Programmer Reviews


It does actually help to boost and throttle respond faster

Reviewed By Jake W (SANTA ROSA, CA) Reviewed for a 1998 Jeep Grand Cherokee —4/26/2016 7:49 PM

After I plug in it and change the settings I felt a big different in power and accelerate faster which is good I'm really happy this product does help really well. Thank u very much

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TruXP Xtune Performance Tuner Reviews


New life for an older truck

Reviewed By william s (WINSTED, CT) Reviewed for a 2004 Chevy Silverado —5/22/2016 5:38 AM

I bought a new rv last year, and was unhappy with the trucks pulling performance....so i did some research,and found a tuner would do the job....i did not need all the bells and whistles..just something to change the timing and shift points....this unit was just the ticket....and it was on sale.... cant beat that....have set it to tow mode and it made a big difference....i live in new england (lots of hills)..and no more overreving to pull them...my truck works within its power band .

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