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08 manual reg cab long bed 4000 miles about 13 mpg unloaded-overhead says 15. 5-16-this mileage sucks

I`m beginning to think (after seeing all these problems with the new 6. 7) that perhaps we all got lemons-this system was not perfected and was sold to the public before it was! No way a new truck should present with so many frigging problems! blue tech=bull---- tech!!!!

we can all thank the morons, liberals, and neo-nazi environmentalists that we elected to Congress for this and many other messes (housing, worthless dollar, dependance on foreign oil, etc etc) these guys haven`t seen the light of day for so long because their heads are so far implanted up their...

wont hold my breath

harvey you`re probably right-I`m probably going to put the resonator back on and and see what happens-kinda ironic since I took it off thinking (and being told) it would improve fuel mileage! Anyway thanks for your reply-it makes sense

is it possible that by removing the small resonator behind the stinkin` particulate filter and replacing it with the straight pipe from Geno`s that I am now getting worse mileage? Only other mod is an afe air intake and I am definitely getting poor mileage and I am a very conservative driver...

rpm`s there must be something wrong with my new 08-reg cab 4x4 6. 7 manual transmission with 3. 73`s-at only 60 mph I`m turning 2000 rpm`s in 6th (damn thing only gets 13-14 mpg not towing nothing!)

have new 2008 2500 reg cab 6. 7 manual with 3. 73- only getting 13. 8 mpg (not towing anything!)

I`m only getting 13. 8 not towing and driving 65 mph or slower!