For all you people having problems with surging my ripp was surging slightly until i dug into the problem more a preset tune is only as good as the person writing the tune. You cant blame the companies for having one truck with a bad tune you have to remember every truck is different and runs differently. To really get your jeep running 100 percent install a wideband gauge so you can monitor your air fuel ratios which is critical to a forced induction motor and pay a local tuner to dial in the air fuels spark fuel delivery at every point in the rpm band so you dont detonate your motor under boost conditions and youll know 100 percent your truck is dialed in and can handle what youll throw at it