bishgeo

Ok guys my 05 six speed with banks cold intake and my quadzilla tuner I get 15-16 empty 10.5 pulling my 38 ft 5th wheel 23,000 gross. Anybody doing any better. Wonder if a tune into ever would do better.

saggonwaggon91

I know with my early 05 3500, NV5600, 3.73 rears, 4x4, I get 17 empty, and the best I've got pulling my 22ft enclosed tag weighing a whopping 7000#, has been 13-15mpg. Mine runs best when I keep it between 60-65mph and it always seems like I fight the wind and hills everytime I hook-up to my trailer and all I have for mods is a K&N cold air and an adjustable timing box w/boost fooler.