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t vago · 08-14-2013, 08:56 PM

"Pumping Losses" is shorthand for describing how much work is needed to generate and maintain a vacuum in the intake manifold. If there is no throttle plate, there is no intake manifold vacuum - hence, no pumping losses.

08-14-2013, 08:56 PM	#2 (permalink)
t vago MPGuino Supporter Join Date: Oct 2010 Location: Hungary Posts: 1,807 iNXS - '10 Opel Zafira 111 Anniversary Suzi - '02 Suzuki Swift GL Thanks: 828 Thanked 708 Times in 456 Posts	"Pumping Losses" is shorthand for describing how much work is needed to generate and maintain a vacuum in the intake manifold. If there is no throttle plate, there is no intake manifold vacuum - hence, no pumping losses.