Got my 138k mi 95 M3 smogged today. I barely passed last time, so was v. concerned that I'd have to replace the cats. Seafoamed it last week, put in new plugs, air filter, oil change, and drove about 50 miles on the freeway to get the cats good and hot.

Had to go to a test only station, so went to AAA Smog at 869 California Ave in Burlingame. Mohammad did a great job, knew that I wanted to run the check as soon as I got on the dyno. He hustled and we got good results, in fact, better than last time around:
_____rpm % CO2__%O__HCmx__HCmeas__COmax__COmeas__NOmax_NOmeas
15 mph 1699 14.8____0.0____85____28___0.50____0.01_____695____ _5
25 mph 1931 14.9____0.0____50____14___0.47____0.00_____717____ 12

All is good.