O2 sensors changed still got a nibbling issue

[Rajvosa]

hi guys replaced the O2 sensors and car is heaps better but still got a nibbling issue!

idle will be ok one minute then something happens and it stumbles for a bit and sound rough etc...

after the drive following codes keep appearing (using the PEAKE tool)

C9 - Lambda control #1
C8 - DME Control Unit
Cb or C6 (this code doesnt appear in the PEAKE book under section for my car)

I have tried swapping my friends Coils and still same problem.

ideas??

[MauiM3Mania]

This was prior to the MAF swap. correct?

[Rajvosa]

yes correct and i got an update:

swapped my friends AFM and car has been running great all day today. solid idle the whole time and no missing during normal driving.

** i am yet to see if in the morning is going to drive any better than this morning (with the old AFM). it ran like a pig for the fist 5 minutes or so (i have removed the secondary air pump but it didnt run this bad before this). hopefully AFM swap will also fix that issue :)

whats a good place to buy new euro M3 AFM?

[chriscotech]

I just bought mine for €151 (only €157 posted to Australia!) from MAF Service GmbH in Berlin. That was the cheapest I could find and the service was good. It was money well spent in my case.