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For the little amount of throttle input to get it in to coast mode, I suspect wouldn't be much of a difference for the creep speed at basically stopped speeds. Assuming it's smart enough to stop the creep current when the brakes are applied harder, I don't think it would be too much of a down side. Would be less wiring involved which would be a lot nicer to hook up.
I guess the TPS is kind of a bad indication since the pedal isn't hooked to the engine directly. Not sure if there's a read out for the pedal input. I might have to pull my scope out again and record the voltage for coast. Over 41mph is a little hard to tell when it's costing since the on screen display still shows power flow. If I remember right, arrows pointing to the engine from battery is roughly the point that it's in coast mode. I guess it's using battery power to keep the engine spinning to keep the rpm's in check. I wonder what's different between that and neutral coasting.
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