Mazda CX7 2009 2.2 diesel Adblue question

[ivanmihov]

I have a question generally of all cars with adblue system,but in this case is Mazda CX7 2009 2.2
if we have problem with one of the adblue components,can the whole adblue system be removed from software,without removing DPF.Will dpf still works without adblue system behind it.As far as i know adblue can be removed and dpf will stil works,but if we remove dpf-adblue should also be removed.How about phisical side of things.If adblue is off,does the cat for adblue needs to be removed from exsaust

[oldford]

The DPF doesn't use Adblue. It's the SCR cat that uses the Adblue. So your DPF is not affected by the removal of Adblue.
See: https://www.dieselforum.org/about-cl...el/what-is-scr

[ivanmihov]

Thanks i know that DPF does not use adblue.how about physical side of things,if adblue is OFF,does it need scr cat to be removed