Quote:
Originally Posted by kafer65
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I thought that selective catalyst reduction (SCR) using urea reduced NOx to N2, water,soot and plant food reducing NOx by 90% as after treatment. Anything bigger than a Jetta had to have that after a certain date and now the Jettas have it too, right?
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Much preferable to EGR. Direct exhaust treatment allows the thermal efficiency of the diesel engine to get better fuel mileage, instead of clogging the intake and reducing combustion temperature.