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[tech] Smog check & timing



Hi all:

	Assuming all else being constant, what is the relationship between ignition 
timing and emissions?  In other words, if the timing is advanced or 
retarded, how does it affect hydrocarbons, NOx, and CO levels?  This is in 
relation to my 81's (1.7L EN, CIS) looming California smog test date.  
Thanks for any insights, benton-----
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