These were my pre-smog readings (back in Aug 2003)
2582rpm max             average         my van
HC      180             0035            111
CO%     1.20            00.20           3.94
C02                                     12.3
O2                                      0.4

988rpm  max             average         my van
HC      150             0040            324
CO%     1.20            00.10           2.93
C02                                     10.7
O2                                      3.8

These are my final readings for the actual test
2656rpm max             average         my van
HC      180             0035            83
CO%     1.20            00.20           .52
C02                                     14.5
O2                                      0.4

922rpm  max             average         my van
HC      150             0040            115
CO%     1.20            00.10           .14
C02                                     10.6
O2                                      6.1

The mechanic made a comment about the CO% being very low.
Anyone have some insite into these being good or is there any problem you can see?

Note:  During the test, it appear that the engine was missing.  I can not hear this at my house because I am in the wide open spaces.  With the exhaust and rear of the van pointed into the garage at the test station, you could hear the apparent mis that was occurring on a random basis.

William