While you passed (yea) the emissions test just barley there are some
thoughts to consider. Of the pollutants from combustion NOx is one of the
nastiest do to its contributions to smog and various health issues. When
thinking of why VW never used one of the gasoline I4 engines in a US Vanagon
I can only think that NOx control was the main issue. Most likely they would
have had to add EGR, more catalyst, and go for the complete testing and
certification thing. Probably at the next testing you may need a new Cat. In
an ideal world the NOx reading should be close to zero. Anything over 200
indicates you are making too much or the after treatment is not working as
it should. 

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
WILLIAM WITZ
Sent: Saturday, July 27, 2013 5:42 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Good News my 84 Westy Passed Cal. Smog

Yep we are legal for two more years. passed with out any hassle. We are in
smog 2 area here in the� Northern San Joaquin Valley so we use fixed rollers
on rear tires. sniffer in exhaust and�fuel evap. test in which they
pressurize the fuel tank to 13 lbs.for about 10mins.�I was wondering what I
could do to bring down my NOX measurement which was 1069 at 15Mph and 414 at
25 Mph?
The max at 15 is1076 and 1103 at 25 Mph this is on a two year old cat that I
bought from Van Caf�. I have 80,000 miles on a Tiico engine which is running
fine with no other problems that I can see. I use 91octane because it is a
high compression engine.
Thanks, Bill Witz