[CWE002]

Hey all first time BMW owner here.
Bought a 2008 335xi last week and it started throwing misfire codes today.

Replaced all the spark plugs and that fixed one of the 2 codes but I’m still throwing misfire on cylinder #2 (only when under load). Next step is gonna be replacing the coil.

The question is: Is cylinder #2 referring to firing order (second closest to the firewall)? Or physical cylinder #2 (second closest to the front)?

I know this is a simple question but I’ve found conflicting information online.

[CWE002]

After I replace the coil if it still throws the code I would guess the next steps are:

- check on the condition of the injector
- check for cracks in the valve cover

Any other suggestions?

It has a stage 1 MHD tune, could this be contributing to the misfires?

Thanks in advance, I have done a lot of work on other platforms, but I’m just getting into the world of BMWs.

[Sgop335]

Here you go

[Aode06]

Order 6 of these. Case closed
https://a.co/d/7RSZA8n