2008 Ford F-250

Bullet proofed, tuned, deleted, resealed, new low pressure fuel pump, new inter cooler, new starter, new oil pressure sending unit, new tires all around, new up pipe, new alternator, new high pressure fuel lines, comes w/live wire programmer/tuner, rear tv with entertainment console w/dvd, upgraded door speakers in all doors with factory sub, up graded tail lights (clear lenses missing on one) still works fine, I believe it’s a 10 inch rough country lift, sitting on new 37x13.50R26’s, and more details not mentioned. NOW HERE IS THE CATCH… after the valley reseal and reassembly with new up pipe, the truck will start and run but only runs for about five to ten seconds and shuts off like someone shut the switch off. This is why so many new parts and now for sale. I can’t figure out what the problem is. You can start it and rev it up many times until it shuts off so you can hear there are no dings or bangs or noises from the motor. Revs up perfect but dies at the same amount of time every time. Has rock lights also, lots of room in back seat for comfort and power sliding back windows, upgraded side mirrors, and yes a clean and clear title in hand in my name. Registered now in Ga. Willing to poss trade for a nice street bike or something fun even if I take a little loss. Tired of messing with this.