What can I do for better fuel / gas mileage?

Question

I have a 1997 7.3L Ford Powerstroke turbo diesel and I want to get every penny out of $4.49 diesel, what can I do to get better mileage?(I dont mean like 'check the tire pressure' i'm looking for performance upgrades that improve mileage) also can someone recommend a tuner, chip, or programmer?Prices also appreciated(already have K&N filter and 4" turbo - back exhaust)Thanks

Answer 1

bully dog tuner workd well and gives you 45-60hp more

try the tornado spacer it goes in between the throttle body and intake