The tuner is the sct tuner. There's a whole thread about it on here. It's for 05-06 3.7s but you have to email the vendor and send him a bunch of info on your jeep and he will tell you if it works. Check out the thread!
'07 3.7 4x4 QT1 ll OME HD w/ MLL ll Rusty's .25" Strut Spacers ll Rusty's Adj Track Bar ll Pro Comp 7005 Wheels ll 255/75/17 BFG KM1's ll 4xGuard Belly Skid ll Thrush Muffler ll Plasti Dipped Emblems ll S4XC Shackles and Grille ll Raptor Lined Trim and Step Pad ll Infinity Reference Speakers ll Riddler Diff Cover (Silver) ll Lube Locker ll Vleds LEDS ll Shorty Antenna