Corey352 Posted September 29, 2014 Share Posted September 29, 2014 I'm about to buy a jet porformance chip stage 2 chip. i have a 1992 4.0 and i was wondering if any of you guys have this chip. is it a good one or not worth the money.. it adds up to 17 horsepower. just want yalls opinions Link to comment Share on other sites More sharing options...
Pete M Posted September 30, 2014 Share Posted September 30, 2014 let us know how it works out! :thumbsup: Link to comment Share on other sites More sharing options...
Eagle Posted September 30, 2014 Share Posted September 30, 2014 Several people in NAXJA tried it over the years, as well as a number of people with ZJs in some forum I used to haunt before Pete started this place. It works -- but it requires high-test gas, and IIRC it either doesn't improve gas mileage, or it makes gas mileage worse. Link to comment Share on other sites More sharing options...
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