I guess I'll expand a little more since there seems to be interest! The truck is not stock, and not even close. It has a 62mm S300 turbo, 4-inch downpipe, ARP head studs, an external wastegate, and built 47RH trans with a manual valvebody, transbrake, and billet input shaft. On two stages of nitrous, the engine has made 514rwhp, but that was with some issues, namely 7 degrees of timing (my fault) and a 20% slip rate from a non-lockup converter. With the lock-up trans and 20 degrees more timing, I'm hoping 700 to the wheels will be possible.
The truck wasn't designed for fuel economy (hence the 300% larger than stock injectors and black smoke at full throttle) I just figured it would be neat for people to see what's possible with diesels. The truck weighed 4850 with a 1/4 tank and 727 trans, so I figure it's a bit heavier now. I go by EGT which seems to be a pretty good indicator of fuel economy. Since I had a 100 degree drop from 65mph to 55mph, I think it will do even better at 55mph, but I'll try to do a test sometime soon to verify that.
My average fuel economy sucks, because I have a 2 mile drive to work (including warm-up) so walking to work usually gives me the best fuel economy
Here's a couple pics of the truck, its main goal is to be a cool sleeper. Thanks for the responses.
