I am leaning toward the Pypes Off-Road H. I'm not sure what sound difference (tone and volume) to expect going from Flows only to Flows and the Off-Road H...I've heard sound clips, but that's not the same as hearing it in person.

I will more than likely be swapping my K&N CAI with a JLT or C&L racer...which should be good for a few more HP. I originally bought my K&N because no tune was required, but later decided to go with the XCal and tunes from Bamachips. It made a huge difference in performance, but I'm still not receiving the full potential of the tunes with the K&N. I will probably be posting the K&N soon for a very reasonable price (it is in like new condition and has less than 1000 miles on it).