I don't know much about the Microtuner, but I'd give you a qualified "Yes" answer to your question. Most chip burns increase the power output of your engine by advancing the fuel delivery, similar in concept to advancing the timing on a gasser. You don't want the fuel timing advanced on a propane program, since the propane has to get into the cylinder, and start to pre-burn before the fuel is delivered. That is basically the difference in the propane/non-propane programs. If you've got the ability to adjust fuel timing with the programmer, the answer would definitely be "Yes".