I have a '99 TJ with the 2.5L 4 cylinder motor. We are in the process of installing the 4.0 Throttle body, K/N Cold Air Intake with the TB Spacer. I have read a bit about these mods and also boring out the Intake manifold TB opening.
My question is: Has anyone installed a performance chip on their Jeep? Which one did you use? I saw this chip on ebay: JAWdropper Triple-A Twin stage Performance Fuel Optimization module. It makes wild claims. Does anyone have experience with this chip?
Thanks