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Old 08-08-2010, 06:49 PM   #22
2010 WRX Limited
Scooby Specialist
Member#: 217458
Join Date: Jul 2009
Chapter/Region: VIC
Location: Langley BC
1989 Mazda Miata
Classic Red


Originally Posted by tora View Post
2010, the way you are describing it, the Catalytic converter is acting as an independent heat source. The catalytic converter is heated VIA the exhaust gases and only functions when heated to a certain temp. This is why your car spews out most of it's harmful emissions within the first 5-10 minutes of driving...once the catalytic converter is heated the emissions drop drastically. If you would like to DISPROVE your theories simply put a catless downpipe on a car, and go through aircare, then put a catted downpipe (or stock) with everything else identical and see what happens.
No I wasn't saying that it is it's own independent heat source. Only that the cat only functions by the engine being purposely tuned to have rich pulses. Wouldn't some of the harmful emissions being spewed from a cold car be due to the fact that the engine itself hasn't reached optimal operating temperature? As far as aircare is concerned, surely we can all agree that it is an epic fail. Or do you think we should continue the aircare program in it's current form?
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