MOT Emissions
Author
Discussion

steve1

Original Poster:

1,251 posts

273 months

Thursday 14th February 2008
quotequote all
I did touch on this in another thread, if there are no official figures printed for the Noble how can they test at time of MOT.
Reason for asking this is, I am about to buy a car with a H&S exhaust system on and the cat has been left out, but replaced by a section of pipe that can swapped over for MOT purposes.
Just curious as to how they test these cars, or am I wrong, and they do produce emission figures for them.

Steve.

peterguk

2,622 posts

246 months

Thursday 14th February 2008
quotequote all
steve1 said:
I did touch on this in another thread, if there are no official figures printed for the Noble how can they test at time of MOT.
Reason for asking this is, I am about to buy a car with a H&S exhaust system on and the cat has been left out, but replaced by a section of pipe that can swapped over for MOT purposes.
Just curious as to how they test these cars, or am I wrong, and they do produce emission figures for them.

Steve.
MOT emissions are based on age of vehicle - make and model is irrelevent.

Edited by peterguk on Thursday 14th February 15:14

steve1

Original Poster:

1,251 posts

273 months

Thursday 14th February 2008
quotequote all
DOH!!!! of course they are.

Thanx.
Steve.

PS. So do you think the cat needs to go back in for MOT purposes.

NobleGuy

7,133 posts

244 months

Thursday 14th February 2008
quotequote all
steve1 said:
DOH!!!! of course they are.

Thanx.
Steve.

PS. So do you think the cat needs to go back in for MOT purposes.
Wouldn't hurt to bung 'em back in temporarily.

peterguk

2,622 posts

246 months

Thursday 14th February 2008
quotequote all
steve1 said:
DOH!!!! of course they are.

Thanx.
Steve.

PS. So do you think the cat needs to go back in for MOT purposes.
Depends if you can get a bent MOT...

Or if you have a Roush exhaust like mine, just put the rear cat in and obstruct one exhaust pipe laugh

Edited by peterguk on Thursday 14th February 16:25

ThatPhilBrettGuy

11,810 posts

269 months

Thursday 14th February 2008
quotequote all
Noble's will not pass MOT's without CATs. With race CAT's mine just got through.

RobP

2,097 posts

270 months

Thursday 14th February 2008
quotequote all
steve1 said:
DOH!!!! of course they are.

Thanx.
Steve.

PS. So do you think the cat needs to go back in for MOT purposes.
Yes.

sean_goodman

536 posts

232 months

Friday 15th February 2008
quotequote all
peterguk said:
steve1 said:
DOH!!!! of course they are.

Thanx.
Steve.

PS. So do you think the cat needs to go back in for MOT purposes.
Depends if you can get a bent MOT...

Or if you have a Roush exhaust like mine, just put the rear cat in and obstruct one exhaust pipe laugh

Edited by peterguk on Thursday 14th February 16:25
like your mentality, what do you mean by "obstruct" though?

just taken my cats off and will be putting the decats on today, having had to take the under tray off to do the front pipe i am interested in the "obstruct" technique for later in the year

steve1

Original Poster:

1,251 posts

273 months

Friday 15th February 2008
quotequote all
I think he means, make sure the mot tester puts the probe up the right pipe, not the de-catted one.

Steve.

sean_goodman

536 posts

232 months

Friday 15th February 2008
quotequote all
oficially if a V engine with two seperate exhaust systems (like the roush) then the tester should do the test two times, once on each exhaust system