FASS vs AirDog.....You Decide!
So, with either the air dog, or the fass-do I get to #@$& can the in-tank pump? I've been fighting an irritating, hard to diagnose "stumble" at idle, and the power seems a bit lower than normal...I had to downshift to 5th to keep up with a duramax. we were pulling a 9% grade, with nearly identical sized trailers in tow.(oh-the shame...)




