Very very good read.
So I decided to remove DPF on my E71. Does DPF and EGR and Cat all found in E71?

Any recommended workshop (please the honest one) for this?
Remove DPF might need to remap, but remap and tuning is it the same? Some charge extra for tuning after removing DPF.. To me macam samething maybe little extra work but a new price to add in for that..