PerformanceDiabloSport Predator U7135 Custom CMR tune from Hemituner (AJ). First impressions on this tune is the Jeep is more 'alive' than when stock. Shift points are higher and improved, I always seem to be in a power band or just a downshift away from more power. Downshifts are crisp and much more direct now too. Overall, the drive-ability is 100 from stock. From a performance standpoint, it's a little faster. I've clocked 4.5 second 0-60s just minutes after the tune install. I am told that the PCM will 'learn' over the next 100 miles or so and I'll see even better performance.Arrington Cold Air Intake.This CAI comes from Arrington Engines (http://www.shophemi.com) and is made in carbon fiber. It's design creates a vortex for incoming air increasing the speed, keeping it cooler for better performance. The filter is HUGE measuring 6.5" at the base.