The High speed did not change much at all but the low speed did to the point where it almost failed. I havent really driven that car more than 2500 miles in the last year. Here are the results from 2005 compared to 2006.

Low Speed Results

April 2005 - 66,510 Miles
HC (PPM) Standard 117 Current Reading 15
CO (%) Standard 0.65 Current Reading 0.01
CO2 (%) 14.8
O2 % 0.4
NOx (ppm) Standard 879 Current Reading 441
Dillution (%) >6 14.8

April 2006 - 69,074 Miles

HC (PPM) Standard 117 Current Reading 108
CO (%) Standard 0.65 Current Reading 0.36
CO2 (%) 14.9
O2 % 1.0
NOx (ppm) Standard 879 Current Reading 213
Dillution (%) >6 15.3

 

Edit: There machine also broke midway through the test, so it did sit for a good 15 minutes.