I installed their performance chip on my wrangler and it seemed to really help with throttle responce. I didnt' have a good way to measure fuel efficiency so I cant't help there...
Arash A.'s review of PerformanceChipsDirect earned 11 Very Helpful votes
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I purchased this chip for my 2012 Honda Civic Si and the chips works great. Instantly I felt...
I bought a stage 2 for my 2013 Camaro 2094086288 I will never buy anything from jet performance...