Quote:
Originally Posted by roosterk0031
DFCO and auto tranny's just don't work, don't worry about the fuel useage will idling and coasting, anytime with the cobalt and I'm coasting over 30 mph I'm 99+ mpg. since I have a manual I can DFCO on down hills if I down shift and keep my RPM over 2k, so I get engine breaking, really I should have started my coast sooner if I need the engine to slow me down.
Focus on not needing to use the brakes that's where the best gains are.
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I don't follow. Both of my vehicles are automatics and have DFCO. The RAM only uses it for decel with a load--it is hard to get it to kick in with an empty truck. It will upshift a gear, relock the converter, and then cutoff fuel flow. I've watched it several times on the MPGuino.
The Avenger does DFCO in OD lock anytime you slow down from 63+mph...to about 55mph. Engine RPMs still happen, accessories still run for both vehicles.
I agree, learning how to NOT use the brakes so much is the best method.