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Does the direct-injected I4 have a traditional EGR system with valve that sends exhaust back to the intake? Or does it pull exhaust back through the exhaust valves by holding them open a little on the intake stroke?
 

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Does the direct-injected I4 have a traditional EGR system with valve that sends exhaust back to the intake? Or does it pull exhaust back through the exhaust valves by holding them open a little on the intake stroke?
It's the latter. I4's use VTC to generate overlap EGR. V6s use a traditional EGR valve.
 
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