You would smell the same thing without the late timing. It still has to enrich the mixture to even run. As long as we have gasoline engines, they will always need a choke.
The genius is that the same dirty flame now extends through the headers to get the cat red hot way earlier than it normally would. That way it smells like shit for a much shorter time.
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Originally Posted by Clipdat
Isn't this counter intuitive though? Have you ever stood behind the car when it's doing it's high rev cold start routine? It smells absolutely disgusting and stinks up the entire area around the car within a 20+ foot radius.
Seems like it's belting out exhaust emissions at a higher than normal volume & velocity during this time, thus polluting more.
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