Quote:
Originally Posted by cRiPpLe_rOoStEr
Not sure to which extent it may increase fuel savings even further, but a manual compared to those earlier 4-speed automatics is light-years away when it comes to fuel-efficiency.
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I think the auto ECU doesn't understand coasting because when I push the clutch in or shift to neutral while moving the engine doesn't idle normally, the RPM jumps between about 1500 and 2500 over and over again about once per second. But as soon as I come to a complete stop, the idle drops down to normal. If I unplug the speed sensor so the ECU doesn't know that I'm moving it idles correctly while coasting also. This must have something to do with the ECU because there is mechanically no difference between idling while sitting still and idling in neutral or with the clutch in while moving.