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2003 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


1500 Silverado

Reviewed By Ronald L (FOX ISLAND, WA) Reviewed for a 2014 Chevy Silverado —9/19/2017 9:30 PM

Haven't hooked it up yet - don't have a review yet.

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Jet Performance Programmer Reviews


Easy To Use Performance Programmer

Reviewed By Larry F (Millington, TN) Reviewed for a 2003 Chevy S10 Pickup —9/18/2017 1:31 PM

This programmer could not be any easier to use. I recommend going online and print a copy of the instruction manual (about 5 or 5 pages) because there were no instructions with the programmer. Most people won't need the manual, but nice to have. I went for the highest setting that requires high test gas, firm shift, and 10 mph higher shift points. I did notice a little more power, but the real winner was the transmission, with much better performance. Good buy!

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