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downinit25i · 05-31-2010, 02:14 PM

Yes it's very similar to EGR, which closes at idle to block exhaust gas flow to the manifold. It opens under partial load, and closes again at full throttle.

05-31-2010, 02:14 PM	#5 (permalink)
downinit25i EcoModding Lurker Join Date: May 2010 Location: Texas Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	Yes it's very similar to EGR, which closes at idle to block exhaust gas flow to the manifold. It opens under partial load, and closes again at full throttle.