Just checked my 2003 crew/short box today and I got 17.3 - only current mod. is 4" exhaust. This tank I just check I had been pretty heavy on the throttle with a lot of town driving. Previously checked tanks were high 18 / low 19 (all calculated manually).

After reading through all the differences in fuel economy, I'm curious which variables make the biggest difference in fuel economy. I've got a laundry list of upgrades to make, regardless of economy, I want to make larger burn-outs!!

How much affect do you guys feel a bed cover or topper makes on fuel economy? I've never had one on a truck but it has to significantly reduce drag (at least one would think). After reading all posts, two of the guys with the best economy had either a topper or a bed cover. What are the thoughts of everyone else on this matter?


Schaack2