De-tune for mpg???
With diesel at $3.00 a gal. and images of Dodge Sprinter vans haunting my dreams, I've been wondering about alternative ways to tackle mpg issues w/ my 6.0. I can't complain too much. Been getting 15-16 in town/18-19 highway when unloaded. Seems average. Anyway, I havn't gone the chip/exhaust/intake route, I don't want to shell out the cash just yet, plus I've only had the truck a year. Doing Amsoil synthetic fluids all around soon. So, to get to the point, I recently read about how the non-F-250 version/ or 'direct from International' version of the 6.0, like maybe in the F-650, Econoline, or other fleet-type vehicles are 'de-tuned' to produce in the 250 hp/450 torque range with a lower max rpm limit...could the lower power, lower rev limit tune of these engines lead to increased mpg? Could I retrofit the ECM of one of these de-tuned 6.0's into my F-250 for better fuel economy? All I ever hear is about making more power for better mpg with chips and such, but could a step down in power be an answer? I have motorcycles to satisfy my need for speed, so I don't necessarily care if the pickup goes fast or not.