Finally got around to putting the Fuel Preporator Air Dog system on this weekend. Fuel pressure stays about 12 at wide open throttle and runs about 16 the rest of the time. The stock pump would drop to 0 at WOT and ran about 6 at idle. It seems like the truck accellerates smoother and pulls a little harder, not a huge difference but noticable. Talk about good tech support, it was Saturday afternoon and I was having trouble getting the quick disconnect hose to snap on the fitting at the tank, I suspected that the little tab thing that was left on the fitting after I took the factory connection loose need to be tore off but was hesitant to do so as you can't see this fitting, It's strictly by feel, so, I callled Larry on his cell phone, he worked for the Air Dog company and he answered the phone on a Saturday afternoon. I told him what was going on and he explained how to remove the tab, the hose snapped right on after that. Thanks for the help Larry, I'm satisfied with this pump.