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Message: [QUOTE="Jmoore1225, post: 451486, member: 4442"] Ok, so truck spun a main back in April. Several thousands of $$ later I have a new long block & 8 new injectors. Truck to me runs great, I have no other basis to compare it to as its the only 6.4 I've ever been in. It's the fastest, strongest diesel I have been in, all my friends have cummins & duramax's & older Fords. My concern is my MPG's!! Reading around on this forum & others, it seems the norm for a tuned truck is to average 14-16 around town & even better on the highway! All I can get out of mine is low 12's & maybe 13's on the highway. Averaging 320-340 miles a tank? Most I have ever got the tank to take was 25 gallons. This is all driving conservatively!!! 1 other thing is I see all these guys talking about how easy their trucks will light up the rear tires. I have never floor boarded it from a dead dig, but from a 5-10mph roll its never lit the tires up. Starts to but always ends up hooking up. Do I seem down on power? I'm running Gearhead hot street, 4inch turbo back, AFE CAI, ARP's & full EGR delete. 35's on 20's & 3.73's. All my gauge #'s are & stay where they should be. Could possibly use some insight on where FRP should be reading on an SCT, say cruising @ 70 @ 50-55? W/ full throttle & converter locked it spikes to 170's & drops & holds in the 160's. Also fuel filters have maybe 1,500 miles on them before I'm told to check those. Do I have any cause for concerns, anything I could diagnose? Or am I just over reacting? I just want the truck to be right!!! Sorry for such a long post..... [/QUOTE]

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