EGR and Smog Legal

[George Roffe]

Wayne Cox wrote:

>I took my then 10 year old 132K mile NX2k in for testing, and accidentally
>forgot to reconnect the EGR.  Results:

>Item    Reading Units   Limit
>HC      20.0            PPM     141.0
>CO      0.07            %       0.79
>CO2     14.23           %       --

>I don't know how that compares to other states' tests, or other cars.  But
>it easily passed with no EGR and no prep other than warming it up.

That's because they aren't testing for NOX.

The EGR (as I understand it) mainly reduces NOX.  More and more communities
are testing for NOX though.  Unfortunately, in Houston they started testing
for it after I installed the DET.  However, I have heard that there are
folks with DETs who have passed NOX without EGR.  I'm probably going to try
it this month (a month ahead of when I must test) to see if I can pass. :-)

George Roffe
Houston, TX
http://www.nissport.com