the truck runs good, i dont notice any sign of it not getting enough fuel. So if i do have to upgrade what would be the best, i only run a comp, smarty, and maybe someday small injectors and turbo, what would be the best upgrade
Mine was running 11-12 psi before the lift pump failed on me while towing. Luckily I was only a mile from the campground. After replacing the lift pump I now idle at 18-19psi and drop to 14-15ish WOT. I would look at updating your lift pump soon....
I'm having problems with my 1yr old FASS. It seized up on me, but I was able to get it running again. My brother has the Airdog on both his trucks with no problems. So I'd say save your money and get the Airdog/Raptor.
I would suggest keeping your fuel pressure no less than 10 psi at WOT. Anywhere between the 10-20 range will be fine on the vp44. Let me know if I can help.