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Old 12-20-2012, 04:38 PM
jhkim jhkim is offline
Registered User
Location: San Francisco CA
Join Date: Dec 2012
Posts: 43
Mein Auto: 525i
Failed smog test

I think I was too lazy. Without doing anything I went to a smog checking station and it failed because of hi NO and HC.

15mph 25mph
%CO2 14.9 15.0
%O2 0.2 0.0
HC 127/81 39/40
CO 0.27/0.47 0.07/0.30
NO 721/478 131/484

It seems fine in 25mph but failed in 15mph. I should start researching what I need to do to reduce HC&NO in low speed.
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