I just bought my first diesel truck Ive has gasoline my whole life. Its a 2002 7.3 w 70,000 miles its a peach never been ran hard as far as I can tell no mods no bed mounted hitches and even the drawtite hitch in the back seems to be un used. it came with a superchips model 1705 hand tuner. im going to slowly add things to this truck for performance and fuel economy. im going to start with a pillar pod with trans temp, egt, boost. I don't care for hauling a$$ in this thing making black smoke or towing extremely heavy loads I bought this truck because id like to have the towing capability if I ever need it and id like to have a vehicle I can put a million miles on if I stay up with the maintancance. so for now my biggest concern is fuel economy and im wondering if I should use the superchips tuner or leave the stock program. I don't have a heavy foot and I am aware that anything I can do to keep the rpms under 2k the better. thanks for your advice

 

Throw it away.

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If you want MPG's and reliability, invest in an intake (6637 or AIS), then 4" exhaust, then custom chip like DP or TS.