Originally Posted by TrueNorth
I can tell you first hand the Unichip piggyback system works as claimed.
JP Magazine had a JK chip shootout not too long ago and backed up thier testing with a dyno. Some as expected don't do squat, some really do add HP and torque.
I have a cold air intake and cat back exhaust as well as custom map in the piggyback unit to match my mods but in "sport" mode the unichip really rips.
I also have a Unichip w/cai, and throttle body spacer. I made the mistake of calling it a 3.8 power fix, not really meaning a true "my jeep will pull the wheels now" type fix, and I didn't give a dyno chart, so this thread brought some doubters. Without claiming hp or torque gain I can say that these things made a very noticeable difference, and yes it wasn,t cheap.And I will not be taking my cai off, (as suggested by many.) These things vary somewhat from jeep to jeep. There are a lot of variances. I will never regret doing this to mine!