Using DFCO to increase your MPG

[ECHOKnight2000]

Originally Posted by Pavel Olavich

Honda uses the term "Grade Logic"....what does Toyota call their's? Anyone know?

I think Toyota referrs to it as uphill/down hill shift logic. For automatics at least. The engine won't gear hunt as much going down hill or up hill (granted if you're gradually going up a hill. I don't know if that has to do with what we're talking about but I bet it has some relation as far as DFCO.

I don't have a Yaris but the ECHO (auto) has a similar set up obviously not the up to date version like the Yaris. I have one question though. I have a scanguage II and I have one of the read outs on closed or open loop. The fuel loop or whatever...anyway I read that when the loop is open it actually means the ECU cuts off fuel to the engine to save gas...so like when I cruise from about 55 and up and just let the car go even in drive the loop opens for a bit until I get to a certain speed. It really opens up either when I floor it or downshift to a lower gear like coming off the highway. I was wonder if this is DFCO cause it cuts off fuel or at least I think it does. Can anyone help me on this who knows about cars? Thanks!