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GMC Envoy Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Module Reviews


seems to do the job

Reviewed By jeff l (POTTSTOWN, PA) Reviewed for a 2003 GMC Envoy —8/22/2013 10:56 AM

I purchased this for my 2003 Envoy XL 4.2L V6 for towing mostly. I also have a K+N cold air intake. My wife and I have noticed a difference in shifting gears, lower RPM's in regular driving and towing, more power where it needs to be, but have not seen a drastic change in fuel economy. Have only had it installed now for 3 weeks. I would certainly recommend this to anyone.

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DiabloSport inTune i2 Tuner Reviews


Not what I was expecting

Reviewed By Daniel B (RIO RANCHO, NM) Reviewed for a 2013 Dodge Ram —6/21/2017 8:58 PM

I'll start by saying I was skeptical. First time using a tuner and I know it should help but never really thought it would be all that noticeable. I used the canned 87 octane tune as I use my vehicle for commute by it really did make a noticeable difference. Much more response with better economy, it's a double win for me. Can't imagine what a 93 custom tune would do for it! If your a first time buyer I would definitely recommend you try it out, you won't be sorry.

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Jet Performance Programmer Reviews


2001 Ford F-250 7.3l

Reviewed By Thomas B (ORANGE PARK, FL) Reviewed for a 2001 Ford F-250 —6/15/2017 4:15 AM

Greatly improved throttle response and eliminated spool up lag. Love it!!!

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Year Range For GMC Envoy Performance Chips & Programmers