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Subject:How much do cams and ratio rockers affect emissions?
From:Damon Campbell
Date:Wed, 5 Feb 2003 18:54:28 -0800

I was thinking of adding 1.3 ratio rockers to my 2.2L boxer project, and possibly a slightly tuned cam.  The local shop i was talking to here in california brought up the issue of passing emissions...

Do these modifications drastically affect emissions?

Looking through the archives on this issue, the boxer mod man himself, mr. Lilly seemed to pass the sniff test with flying colours, but i would like to hear other opinions before i potentially screw myself in the rear (so to speak).  I am particularly concerned living here in california where emissions are especially stringent.

Thanks,

-Damon

'84 Westy

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