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by yuhong 3885 days ago
From http://www3.epa.gov/otaq/cert/documents/vw-nov-2015-11-02.pd...

"the high temperatures heat the selective catalytic reduction system ("catalyst") and improves the catalyst's ability to reduce tailpipe NOx emissions"

There has been recently http://www.thestar.com/autos/2015/09/30/canadian-trios-exhau...

I wonder if this tech would work for SCR systems or not.