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      11-14-2012, 03:37 PM   #1
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Drives: BMW E92 320i M-Sport
Join Date: Jun 2012
Location: West London

Posts: 164
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Failed MOT - Emissions Lambda

My E92 320i failed its MOT on emissions lambda reading. The sheet shows lambda upper limit reading as 1.03, my actual was 2.20.

Now after doing a bit of research, I come across:


Can anyone here confirm if the lambda upper limit should be 4.0 on the N43 petrol engines?
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