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GMC Envoy Jet Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Programmer Reviews


Generally Impressed

Reviewed By John M (NICEVILLE, FL) Reviewed for a 2002 Lincoln Blackwood —1/7/2013 11:51 AM

Upon opening the package I was dissapointed in the appearance of the unit. It generally looked cheap. The programming however was really impressive. It took les than 10 minutes to add around 15 HP and 2 MPG to my 5.4L gas hog. I would recommend this product.

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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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