Originally Posted by williams lcm
Just bought a 2013 Ferris 3100z 37 Kaw DFI and the gas usage similar to my 2010 JD Z950 with a 31hp kaw. Cant tell the difference in usage. The fuel injection is supposed to be more fuel efficient than the regular models.
Your usage on the 37 DFI model should be in the 1.4 gph range.