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1999 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 Max Energy Programmer Reviews

Exactly what I needed

Reviewed By Lester M (Salisbury, NC) Reviewed for a 2003 Chevy Silverado —10/14/2016 3:33 AM

I purchased a different controller at a higher price. It caused the check engine light to come on and it surged when idling. I spent (6) 20 minute unsuccessful attempts to talk to their customer service without any success. I ordered the Hypertech. Everything was programmed in 10 minutes with the Hypertech. I've owned another Hypertech unit for 8-10 years and it still works perfect. I don't know why I didn't get Hypertech first. I love my Hypertech and so does my truck.

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Jet Performance Programmer Reviews


Reviewed By JOHN B (HAMDEN, CT) Reviewed for a 2007 Chevy Monte Carlo —9/13/2016 5:13 PM


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