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Discussion Starter #41
Great truck always loved a Cummins. Have you done anything to the engine?
BAAF (Big Ass Air Filter)

Tow/Fuel Economy setting on a Superchips Tune (decent up in power with EGT's always staying cool and tranny shifting crisply).

Exhaust tweeked

That's it. 80k absolutely trouble free miles as of yesterday.
 

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I am always down in Santa Cruz and Santa Clara visiting family, you need to bring that rig to one of the GTG in San Jose haha.
 

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Discussion Starter #44
What kind of fuel mileage have you been seeing?
I am not a mpg freak, but in general I think it is safe to say 15-16mpg around "town", as high as 22mpg on road trips (not loaded or towing), and with load/towing (depending on if I am in the hills or just hwy) 11-14 mpg or so (this varies so much according to load).

I am running 4:10's w/35's and see about 1800 and change @ 70, right at 2000rpm at 70 in tow/haul for a reference point. Odometer/speedometer and computer are flashed for the tire size.
 
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