Quote:
Originally Posted by stovie
on a 2.3% slope my jeep will hit about 65-70mph in nuetral witch i'd like to increase with aero mods so then i can do in gear coasting(my injectors shut off when i let off the gas in gear) cause in gear right now it only slows a little bit but by reducing the cd should allow me to maintain speed will in gear for better mpg's, it should also allow me to get better fuel economy going up hills. I'm between 15 and 20 mpg going up 6-8% slopes at 55-60mph
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+1 Stovie
My ScanGauge shows the fuel injector shutoff effect while engine braking down hills. With my 4.7L idling at 0.5gph my coasting MPG at 60mph is 120mpg versus infinite (9999mpg on SG screen wit 0gph denominator). When towing trailers through PA mountains (many trips over 2 years) the strategy helped substantially.
htvfd460, IIUC you have both a Ranger and Super Duty and your circa 20mpg numbers would be from the latter. If so, those numbers look great. Rock on!