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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


Instant results, extremely easy to use.

Reviewed By Jordan R (PRIOR LAKE, MN) Reviewed for a 2007 Chevy Avalanche —8/20/2015 5:46 AM

Main reason for my purchase was to give my 2007 Chevy Avalanche a little kick when either accelerating from a dead stop or getting onto a freeway. Being only a 4 speed, I noticed my Avalanche "lagged", for a lack of a better word, when getting onto a freeway and trying to accelerate to freeway speeds. I wasn't expecting a huge boost, but I definitely noticed an increase in power when I put the pedal down. Fuel economy stayed the same if not increased, highly recommend this product.

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Edge Insight CS/CTS Monitors Reviews


EGT and MORE

Reviewed By mark W (Everett, WA) Reviewed for a 2015 Chevy Silverado —7/29/2015 2:54 AM

I bought the EDGE INSIGHT so I could read what my truck already knows. Install was a snap into my 2015 Silverado 3500 duramax and now I can view my EGT without drilling so I know when it's safe to shut down when I'm towing. Pre turbo EGT isn't available but I'm able to use my non-towing EGTs as target temps.

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