I thought I would post the final #s,with a new cat,just for the record the Hc's were under 200ppm at idle and 2500 rpm so I don't think I had a misfire.

15 mph/ 1734 rpm/ co2 14.85%/ o2 .10%/ hc 92ppm/ co .03/ nox 61ppm and this was a quick pass with no pre-... Login to read more.