Reviewed By Dex B (ALBION, IN) Reviewed for a 2004 GMC Sierra —7/12/2015 4:25 AM
I got the bully dog to try and increase my fuel mileage and give me a little more giddy up when I'm hooked to the trailer. Before the triple dog I was averaging 11 to 11.5 Mpg, maybe 8 with a trailer loaded down. Now I'm averaging 14 to 15 and 12ish with my trailer. Very good investment I'm glad I got that little bugger.