Have to say that you'd be hard pressed to see mine for a transfer box Prop shaf and undergrad anyway. But I just broke mine down, ( I don't know how diff mine is to 2wd downpipe but I got an extension down into and knocked away with a hammer) and dropped it in the bin whilst I cleaned the turbo vanes. Regardless it's much better, a lot smoother and pretty much no more noise. Could also be the clean turbo lol. And as jay says I'm sure it's technicaly cars with dpf but again it's down to the given mot tester. I mean they can advise for engine covers and under trays but I'd say 9/10 that pass through our workshop don't. I also know that pretty much no 140 came with dpf if any?