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**Cromax** · 10-15-05, 6:38

I am starting to get very sceptical about what people are saying about exhausts ... as I know that what you are saying would be good if applied to a car that does track - but not so much for a car which is stuck in traffic...

... apologies about saying some of it was wrong without stipulating exactly what it was ...

.. the cat does not simply burn off excess fuel, it actually changes the structure of the molecules for Hydrocarbons (HC), Carbon Monoxide (CO) and Nitrous Oxide (NO) into DiHydrogen Oxide (H20 ... aka water), Carbon Dioxide (CO2) and Nitrogen (N2) ... as these emissions are essentially benign. You're right that they do operate at high temperatures, but reducing the operating temperature of a cat below about 450 degrees celsius (this is from memory) means it is not performing its job, and therefore you might as well just replace the cat with a straight pipe.

I hope I make sense.

10-15-05, 6:38	#22 (permalink)
Cromax Join Date: Apr 2003 Location: Melbourne, Victoria, Australia Age: 26 iTrader: (0)	I am starting to get very sceptical about what people are saying about exhausts ... as I know that what you are saying would be good if applied to a car that does track - but not so much for a car which is stuck in traffic... ... apologies about saying some of it was wrong without stipulating exactly what it was ... .. the cat does not simply burn off excess fuel, it actually changes the structure of the molecules for Hydrocarbons (HC), Carbon Monoxide (CO) and Nitrous Oxide (NO) into DiHydrogen Oxide (H20 ... aka water), Carbon Dioxide (CO2) and Nitrogen (N2) ... as these emissions are essentially benign. You're right that they do operate at high temperatures, but reducing the operating temperature of a cat below about 450 degrees celsius (this is from memory) means it is not performing its job, and therefore you might as well just replace the cat with a straight pipe. I hope I make sense. Last edited by Cromax : 10-15-05 at 6:45.
	1993 Mazda MX6 4WS 2004 Mazda RX8 Luxury "If it was so, it might be; and it were so, it would be; but as it isn't, it ain't. That's logic." - Lewis Carrol