[oldbilly]

Has anyone a gutted DPF fitted, is louder than a replacement pipe due to it being empty?

[Ajs_435d]

For me I'd get a straight pipe due to bad resonances of camber it's a bulge for a reason to increase surface area when dpf medium is fitted, won't be the best for performance but likely not a lot in it.

Whistle with my dpf delete small increase in noise more throaty on my 335d I like it.

[Dan-danGT]

I have a gutted Dpf, not much louder well not in the cabin. but the noise from the exhaust is louder specially on tickover not annoying though

[basim07]

I have a gutted DPF too and the difference is barely noticeable, very slightly louder at idle, you won't realise unless your actively listening

[Somerset Jim]

Also don't forget that the MOT is a visual check so if you don't have the old DPF housing then it would be a fail.

[Dan-danGT]

Originally Posted by Somerset Jim

Also don't forget that the MOT is a visual check so if you don't have the old DPF housing then it would be a fail.

thats why I kept mine to look correct! I could not be bothered to refit it just for an mot

[Icekube]

Originally Posted by Somerset Jim

Also don't forget that the MOT is a visual check so if you don't have the old DPF housing then it would be a fail.

i have a straight pipe in place, the MOT man put down "plastics obscuring proper inspection" or something like that. which i presume means he was giving me a pass on the de-cat.

this wasn't a "friendly" MOT place either, I had never used them before and needed an MOT ASAP (forgot about it!)

[Somerset Jim]

Originally Posted by Icekube

i have a straight pipe in place, the MOT man put down "plastics obscuring proper inspection" or something like that. which i presume means he was giving me a pass on the de-cat.

this wasn't a "friendly" MOT place either, I had never used them before and needed an MOT ASAP (forgot about it!)

Sounds like you were lucky there then

[oldbilly]

Thanks for your replies, I already have an ecotune pipe fitted and was thinking of fitting the gutted dpf as I will be selling the car next year.

[JulesM]

Originally Posted by Icekube

i have a straight pipe in place, the MOT man put down "plastics obscuring proper inspection" or something like that. which i presume means he was giving me a pass on the de-cat.

this wasn't a "friendly" MOT place either, I had never used them before and needed an MOT ASAP (forgot about it!)

Aren't they covered as standard? I'm not sure what mine looks like from underneath but if it was ever a problem I'd just put a shield over it for MOT purposes.

[Icekube]

Originally Posted by JulesM

Aren't they covered as standard? I'm not sure what mine looks like from underneath but if it was ever a problem I'd just put a shield over it for MOT purposes.

yea there is a plastic under tray, but if you are looking for it, its not very hard to see up at the down pipe.