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Originally Posted by UFO
Maybe you can support that claim. All that I've read about NOx is it requires hydrocarbons and UV to create smog. Modern pollution controls have reduced vehicle HC output to the point that additional NOx control is pointless.
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On gas engines.
On diesels, NOx (and PM) remains a serious problem.
Using biodiesel in non-EGR engines, NOx output is further increased over regular diesel.
(EPA test on non-EGR vehicles)
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Even so, if I net 10% better mileage with the disabled EGR, my total pollution output with biodiesel is WAY ahead.
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Biodiesel has serious advantages over regular diesel, being renewable and having lower HC, particulate, sulphates and PAH emissions.
So why ruin its NOx emissions by disabling EGR
CO2 is not the issue as biodiesel is renewable.
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Additionally, I don't have to clean out my intakes anymore. Bonus.
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If we all throw the emissions control gear out of our cars, motoring would be a lot cheaper for all ... Bonus.
Or not ?
We'd also be going back to the pollution levels of the 50's-60's-70's.