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GMC Jimmy Performance Chips & Programmers

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Latest Customer Reviews

Edge Insight CS2 Monitor Reviews


Edge Insight CS2 Monitor

Reviewed By Richard S (JANESVILLE, MN) Reviewed for a 2008 GMC Sierra —10/4/2017 3:09 AM

good product , easy install, great price , easy to program

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DiabloSport PC Interface - USB Cable Kit Reviews


Great buy

Reviewed By Kolton B (LEVELLAND, TX) Reviewed for a 2009 GMC Sierra —7/19/2016 11:58 PM

Got here extremely fast, works excellent.

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Jet Performance Programmer Reviews


4.2 GAME CHANGER

Reviewed By Linda R (Titus, AL) Reviewed for a 2008 Chevy Trailblazer —10/19/2017 4:11 PM

Jet seems to be the only programmer that works for the 4.2 chevy inline 6. No problem with the installation and I noticed an instant increase in the low end power. this is where the 4.2 really sucks. Don't know why they did not use the 4.3.

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