Tuners won’t make much difference for the mods you did. But a SuperChips Flashpaq will let you tune your 2012 for Premium gas that will make a difference. We have found that intakes and exhaust really don’t do much for either the 3.8L or the 3.6L. Other then that A custom tune may make a bit of difference but not worth the cost.Now that I have intake and exhaust I was considering getting a tuner/chip for my 2012 jku sport. What do you guys use?