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2003 Mercury Mountaineer Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Module Reviews


Little to no gain

Reviewed By Patrick S (Methuen, MA) Reviewed for a 2001 Mercury Mountaineer —4/10/2007 4:37 AM

I have had the Jet PCM installed for a little over a week and noticed little to no gain in performance installation was easy but clean the s%#t out of the stock connections or it wont work. the only gain i noticed with the chip was when i changed the spark plugs to Bosch Platinum Ir Fusion. Modes done to suv 5.0 with cam/supercharger intake with 95mm mass airflow and magnaflow true dual side pipes best 1/4 13.9

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Superchips Flashpaq Tuner Reviews


very pleased!

Reviewed By yancey g (Oneida, WI) Reviewed for a 2001 GMC Yukon —12/16/2014 5:54 PM

Easy to use, better mileage, more power, and a low price, what's not to like about this tuner!?

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Superchips Cortex Programmer Reviews


Good item

Reviewed By Kevin K (Cleveland, AL) —12/13/2014 10:58 AM

Have bought two of these now for a Ford Explorer Sporttrac and a Dodge Ram w/ Hemi. The Ford is used to pull a 3800 lb. camper and it has greatly improved shifting and towing. I did not see much increase in mileage with gas saver mode but can tell a real difference in the power and shifting in Performance Mode. The one for my sons Dodge has not been used enough to rate yet but he does claim son increase in fuel economy on the highway driving the 300 miles between home and college.

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Year Range For Mercury Mountaineer Performance Chips & Programmers