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Chevy Astro Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Module Reviews


No major problems with it

Reviewed By William K (Chicago, IL) Reviewed for a 2003 Chevy Astro —11/23/2011 6:11 AM

Instruction manual was incomplete; did not have my Astro van listed. Called help number and they helped me. Can't really feel any difference in performance. Haven't checked gas mileage yet.

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Hypertech Speedometer Calibrator Reviews


Worked great

Reviewed By Terry H (King George, VA) Reviewed for a 2004 Chevy Silverado —11/4/2017 5:48 AM

Very easy to use totally satisfied

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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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