[X3 Downunder]

Hi All, I have a X3 E83 30D. I am attempting a DPF clean due to error code. My Question is
1) after the turbo is the DPF next and then the Cat?
2) on the unit (which I think is the DPF) there is a O2 sensor and Temp probe. If there an access tube in order to pump cleaner in?
3) has anyone performed a DPF clean on a 2008 model E83 X3 30d?

Any help / pictures of access point will be greatly appreciated

Cheers