Quote:
Originally Posted by slownugly
I use dfco a lot. I can read that on my afr because it pegs lean.
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DCFO is a way to slow down while using no fuel, but coasting without slowing down (engine on or engine off) is even more efficient in the long term. Unless you are actually coming to a stop, or have a downhill stretch that is so long that even if you crest the hill at 5 MPH you still get too fast.
-soD