mk1 FR TDI

[daveg1]

i have a leon fr tdi 150 pd and was thinking about cutting off the back box and fitting a straight pipe. i was wondering if anybody would know if it would pass an MOT this way or if id have to weld a flange to re attach for MOT.

also if any is MOT qualified is there a desibell test and how loud can your car get?

dave

 

[bruceR]

Hi Dave, you will be ok for the MOT with the back box removed
There are plenty of members on here have done this, commonly known as a mufflectomy (or something like that)
The MOT for diesels just take into account a soot test and not an emissions test - so as you drive to the MOT station just rip the ass off her to clear the pipes and you will be fine

 

[S10EAT]

DO IT! DO IT NOOOWWWW!

You won't regret it, sounds a little bit louder and has been dyno proven to increase bhp by as much as 7 bhp!

As above, is MOT safe, my existing and previous Leon have both passed all MOT's without the backbox.

 

[Pimped up vario]

The mot centres are getting wild fussy over here. My mum's car and cousins car went through when I said they might fail, (their call on the work being done or not) and my car failed when it wasn't half as bad as their cars.

 

[LCsTed]

ooooh sounds good. might have to do this to mine when I get her back

Sent from my GT-I9300 using Tapatalk

 

[Andrewcupra TDI]

as said its called mufflerectomy , not seen or heard anyone local thats done it

which would be interesting to compare against my miltek system tbh

 

[benbissett]

im planning this on my leon soon ... I done it on my previous one and it was ace !!

 

[ckyliu]

It is now an MOT fail to remove the DPF from a vehicle, although the tester will only check visually for this and some might turn a blind eye. I presume that same rule would apply to the catalytic converter too. Details:
http://www.gov.uk/government/news/new-rules-for-mot-to-test-for-diesel-particulate-filter

 

[dgjdrummer]

It is now an MOT fail to remove the DPF from a vehicle, although the tester will only check visually for this and some might turn a blind eye. I presume that same rule would apply to the catalytic converter too. Details:
http://www.gov.uk/government/news/new-rules-for-mot-to-test-for-diesel-particulate-filter

Mk1 Leons don't have a DPF fitted so would not be subject to inspection. I've heard mixed comments regarding CATs as the exact wording implies that a CAT has to be visually checked for ONLY when performing an emissions test.

Diesels do not go through an emissions test, just a smoke test, so are therefore technically exempt from visual inspection although this seems to be up to tester judgement or having a friendly tester to help you out.

 

[Pimped up vario]

Diesels are exempt from the smoke test in Northern Ireland. Complaints of failed turbos and damaged engines put pay to that test.