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Old 09-04-2010, 08:12 AM   #28 (permalink)
RobertSmalls
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Location: Buffalo, NY, USA
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Prius C - '12 Toyota Prius C
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Quote:
Originally Posted by comptiger5000 View Post
The effort of sucking air past a closed throttle plate is what provides the engine braking effect during DFCO.
I thought so too, but then I hit the fuel kill toggle switch for DFCO on demand. When I open the throttle plate, all that changes is the exhaust note, not the rate of deceleration.
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