Cheating the sniffer?

[abatzis2@hotmail.com (Michael Abatzis)]

you can adjust the mixture to reduce some emissions, but others will rise (i 
don't remember exactly, but iirc leaning it out increases NOx, reduces HC 
and CO). don't think you'll be able to get away with this on the dyno type 
emissions tests here though.  otoh, i have a tt dp and cat with my car, had 
cams, 2l block, etc, and the emissions are practically zero. with a new cat 
and a properly tuned car, you shouldn't have any problems whatsoever. even 
without a cat, a rocc can pass emissions with the old style idle-sniffer 
tests (but i couldn't do it with the dyno tests).



-Michael Abatzis
Hotlanta! GA
1988 Scirocco 2L 16v RIP-->parting, finally taking orders: 
www.learnlink.emory.edu/~mabatzi/mikes_page1.html
1987 Scirocco 2L 16v...




>From: Calimus <calimus@techography.net>
>To: Scirocco ML <scirocco-l@scirocco.org>
>Subject: Cheating the sniffer?
>Date: Thu, 27 Feb 2003 11:19:46 -0500
>
>Challange time.
>
>Senerio:  Your rocco didn't pass the sniffer after you put on a TT
>street header and exhaust system with a new cat.
>
>Challange:  To get past the sniffer without having to take all your
>goodies off.
>
>
>Is it possible if you didn't fail the sniffer by much to just lean the
>engine out and get by?
>
>What really needs to come into play with this?  I don't have all the
>details since it wasn't my rocco that failed the sniffer but I've often
>thought that leaning out the car would help in this area, true or BS?
>
>William
>--
>http://www.techography.com/scirocco (s.org forums)
>http://www.techography.net:82/scirocco  (my rocco's site)
>
>88' Scirocco 16v (Crabby 16v)
>89' Cabriolet 8v (pretty bunneh)
>71' Karmann Ghia (air sucker)
>
>
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