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Originally Posted by rgclark
Has anybody installed a Jet or similiar chip on the 05 4.2?
Just wondering if it made any substantial difference. I tow a camper and could use any extra performance.
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Yah I have installed Stage 1 jet chip. It certainly helps, the pick up is faster as I have a EXT and 22". You can feel the difference but the sad part it burns more fuel. my average is gone down since installed but I really dont mind that cause fuel is cheaper than water in Kuwait....