Re: I stand...or...sit rather...corrected. I think what - Saab Performance Bulletin Board - Saabnet.com
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Re: I stand...or...sit rather...corrected. I think what
Posted by Eric Law [Email] (more from Eric Law) on Wed, 29 Aug 2007 07:13:51
In Reply to: I stand...or...sit rather...corrected. I think what..., David in Tallahassee [Profile/Gallery]
, Tue, 28 Aug 2007 20:41:19
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David,
One minor point, while you are absolutely correct that cats reduce rather than eliminate pollutants, they reduce them a *lot*!
Before the cat (i.e. right out of the exhaust manifold), most cars run about 0.8 to 1.2% CO at idle. Probably a tad less at steady-state cruise, and a lot more (10% or more) at wide-open throttle.
Years ago when I used to inspect cars here in MA and we only tested CO and HC, it was not uncommon for the analyzer to read "0.0" on both numbers at the tailpipe!
Eric Law
posted by 70.88.24...
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