JimIII,
The truck has LT's with Hiflo cats. It drives fine(normal) which leads me to believe there is nothing mechanically wrong with it. Remember I am no mechanic so what seems fine to me may not be fine to someone else. As far as fuel issues go I run the usual 93 on the street and change my fuel filter fairly regularly. I have 255lph pumps in the tank but I do not have a fuel pressure gauge in the truck so I do not know. I would have to have someone look at that to tell me. When I go to the track I like to have at least 1/4 tank(93) and I add 5gal of VP racing fuel(117 octane). The reason is for the 20psi and timming in the race tune. When I was only running about 15-16psi I would put 104 unleaded in at the track instead.