## This is from the original poster ## First of all, I would like to thank everyone helping solving the problem. This is my final report on my smog problem. After I read all the responses, I decided to replace all the fuel injectors and the catalytic converter (CAT). This is after I check the O2 sensor, ignition wiring, spark plug gap size, vacuum leak. I changed the fuel injectors because it does not cost that much to put a new one in. Last night, I installed the new CAT. To my surprise, there is nothing inside in the CAT. It is just an empty container. After I stalled the CAT, the exhaust gas smell much better now. The car is also not as noisy as before. I did the smog check the car this morning, and it passed with wide margin. Old result; RPM=2292 (at 15mph) HC_MAX = 141 HC_GP=331 HC_MEAS = 161 CO_MAX = 0.99 CO_GP=2.49 CO_MEAS=0.66 NOX_MAX = 1148 NOX_GP = 2270 NOX_MEAS = 2211 CO2_% = 14.1 O2_% = 0.8 RPM=2408 (at 25mph) HC_MAX = 113 HC_GP=263 HC_MEAS = 156 CO_MAX = 0.79 CO_GP=2.29 CO_MEAS=0.66 NOX_MAX = 978 NOX_GP = 2070 NOX_MEAS = 2276 CO2_MEAS% = 14.1 O2_MEAS% = 0.7 New results: (all _GP terms become _AVG) RPM=1847 (at 15mph) HC_MAX = 141 HC_AVG=45 HC_MEAS = 8 CO_MAX = 0.99 CO_AVG=0.16 CO_MEAS=0.01 NOX_MAX = 1148 NOX_AVG = 434 NOX_MEAS = 654 CO2_MEAS% = 14.8 O2_MEAS% = 0.2 RPM=2403 (at 25mph) HC_MAX = 113 HC_AVG=33 HC_MEAS = 6 CO_MAX = 0.79 CO_AVG=0.14 CO_MEAS=0.00 NOX_MAX = 978 NOX_AVG = 357 NOX_MEAS = 620 CO2_MEAS% = 14.8 O2_MEAS% = 0.2 MEAS= AMOUNT MEASURED AVG=AVERAGE EMISSION FOR PASSING VEHICLES GP= GROSS POLLUTER LIMITES To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/