Do you need a DPF to pass the MOT?

[Oi_Oi_Savaloy]

Chaps

Just mulling over the idea of removing my DPF on the old E39 (530d) and replacing it with a straight-through pipe).

Instead of having to replace come MOT time, my question is, do I actually need it to pass the MOT?

I was goiong to combine this with the purchase of the upgraded downpipe from Ecotune. See if I can't improve my mpg somewhat.

[Max M4X WW]

It will pass, Not needed.

[p1tse]

I've read that possible new legislation mean those fitted from factory will need one, how true I'm not sure?

[p1tse]

that's true and would make more sense

also i think they are tightening up on aftermarket HID/xenon type lights too

[phelix]

Did the E39 530d have a DPF? I thought they just had cats?

[4rephill]

anonymous said:

[redacted]

This is the universal legislation that is planned to be brought in and there's no mention of only applying to vehicles manufactured after a certain date: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?...

Section 6 states:

(6) This Recommendation is a first step towards a uniform assessment of the deficiencies identified during roadworthiness testing within the Union.
Followed by:
Member States should assess failures detected during a roadworthiness test of a vehicle in accordance with the guidelines set out in the Annex to this Recommendation.


As for removing DPF's:

8.2.2.1. Exhaust emission control equipment
(a) Emission control equipment fitted by the manufacturer absent or obviously defective.

So as I read it, if it was originally fitted at the factory, it will need to be fitted to pass the test.

[MattOz]

phelix said:

Did the E39 530d have a DPF? I thought they just had cats?

You're spot on Phelix. An E39 530d doesn't have a DPF.

[Oi_Oi_Savaloy]

Ah. My fault! I inadvertently looked up my boss's 04 plated E60 5 series last week on real oem and forgot that I'd looked up his (i bought him the eco tune downpipe for his car - he's very pleased with it by the way - had it fitted on Friday).

I then mistook the two catalytic converters (the secondary ones - not the tiddlers on the downpipe) for a DPF on mine.

So apologies all around - I'll get me coat etc etc.

Still - at least it's created a small debate on the topic!