Quote:
Originally Posted by BlueDubbinTDI
I knew the car would stink a little, but can you just explain why exactly...
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Quote:
A catalytic converter is a vehicle emissions control device that converts toxic pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction (oxidation or reduction).
-Wikipedia
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That's why it smells more without a cat. The fumes are coming out of the car without any
catalyst material there to
convert the pollutants.
