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Hi folks,
Toyota put out this lovely 7th-grade-level bulletin on the chemistry of the combustion processes that lead to pollutants. The graphs are real handy and informative.
Graphs include HC & CO & NOx emissions for rich v lean air fuel mixtures. Also explains why the lean-burn (i.e., Insight5spd) releases more NOx. Describes why cold engines release more CO when the cat is least able to handle it.
<http://www.autoshop101.com/forms/h55.pdf>
enjoy, nathan
 

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And this one, too!

Mods, how do these "bots" get in? Is there some sort of open back-door or something? Better check the locks!
 

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Here is the problem...

Letting non registered folks post to the forums will always result in someone who is a spammer using a forum like ours. It is one of those things that will require constant vigilance against.

I'm going through the threads again and getting rid of those spam posts.
 
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