Moparguy On your FITech system is it a 1 barreland what kind of economy will it produce ?? Had to have some tuneup work on my only propane injected 04 GMC with 4.8 engine. It has been fine but once you leave home LPG is always expensive,not hard to find on the interstate. Propane buying is a summer sport and you need storage,so your holding it in hot weather when pressure is the highest.My injection mechanic said when gasoline goes hi he starts getting calls for LPG installations. Get 14 MPG computes to about 28 compared to gasoline. I wonder if lp vapor injectors might be useful on 235/261.
