Just did my first trip to work with the stage I ... being that I paid $185 for the chip on sale I think that it made a great deal of difference in the drivability of the JK. doesn't make it a hotrod , but you can ease into the gas without the Airaid growl being overwhelming and the downshift of the automatic. so far I'm overall pleased with the product. Easy install...undo the negative cable of battery (won't lose sirius or fm presets, will lose clock) unplug a cable from ecm plug chip in, plug cable into chip, reconnect ground and start JK. Once again this is not going to give you tire chirping power but more overall driving power. I would deffinately do it again.