Simply put…the egr valve dumps exhaust gas into the intake. That’s not a performance boosting act but it’s required by the EPA. As Caddyman said “Engines ran just fine without EGR valves for 80 years…They still do today…”.
Simply put…the egr valve dumps exhaust gas into the intake. That’s not a performance boosting act but it’s required by the EPA. As Caddyman said “Engines ran just fine without EGR valves for 80 years…They still do today…”.