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dcb · 11-26-2009, 09:58 AM

well, it's a bit hokey, but with no onboard speed signal, you can just connect the speed/vss lead to a small pushbutton perhaps that will flash a 12 volt blip. Then set vsspulsespermile to whatever (20?)

More practical is to just get good at doing the math in your head, divide your MPH by the GPH (Gallons Per Hour) and you have MPG. Use the cars built in trip/odo for larger samples and compare to the fuel used.

Car probably has a speed signal already though, got any schematics?

11-26-2009, 09:58 AM	#2 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	well, it's a bit hokey, but with no onboard speed signal, you can just connect the speed/vss lead to a small pushbutton perhaps that will flash a 12 volt blip. Then set vsspulsespermile to whatever (20?) More practical is to just get good at doing the math in your head, divide your MPH by the GPH (Gallons Per Hour) and you have MPG. Use the cars built in trip/odo for larger samples and compare to the fuel used. Car probably has a speed signal already though, got any schematics? __________________ WINDMILLS DO NOT WORK THAT WAY!!!