You may need something like a Dakota Digital fan controller to operate it outside the PCM. I was going to go this route when I went to a bigger radiator but the Guys at C&R Radiators told me how good the stock fan is I kept it. I doubt that there is a more powerful fan available and it's a brushless fan as well.
2014 JKU, red, 2.5" AEV lift,6.4L VVT, 35" Duratrac's. 4.10, Gen Right bumpers, VR 8000 winch, Pro Rock 44.