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Re: NEXT Generation EGR Technology
Posted to Technical Discussion Forum on 7/2/2023 4 Replies

VVT is a form of EGR. Valve overlap is how the exhaust recirculates back into the combustion chamber. There are some Chevy Trail Blazers that have EGR listed on the under hood label, but have no actual EGR valve. Although there is a plate covering the spot whe... Login to read more.

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