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Old 02-11-2009, 04:28 PM
Mike D Mike D is offline
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Join Date: Jan 2006
Location: Tucson, AZ
Posts: 5,358
I believe you mean 400PPM for hydrocarbons and 2.0% for CO. That's pretty strict for the CO. Here in AZ it's 300 PPM for HC and 4.0% for CO.

That would be some smelly exhaust with 20% HC's!
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