Quote:
Originally Posted by UFO
EGR does help with NOx emissions, but it's a secondary pollution.
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NOx hardly qualifies as
secondary pollution, it's about the most harmfull thing to come out of the exhaust !
Biodiesel generates around 10% more NOx than regular diesel, so disabling the EGR while on biodiesel is not the best of options.
If your car has EGR, please keep it operational !
Better mileage at the expense of polluting MORE is not my idea of driving more environmentally friendly.