exhuast causing mot failure!

[StuLCR52]

just got the lcr mot and the exhuast CO reading was 0.709 on the first fast run and 0.430 on second run, shud be 0.200? anybody got ne comments to help me!
its a custom made 3" turbo back system with a 100% cell race cat, ive put cataclean into the system to try and help but aint had it tested again yet.

stu

 

[Tallpaul]

IIRC Milltek had issues with their 100cell Race Cats failing MOT's and now sell them with 200cells with 100 as a special order item.

 

[EddyH]

What do you mean by fast run? I thought it was done at constant revs and only at about 1500rpm. Who made the exhaust? They would be my first port of call if it's failing the MOT on emissions.

 

[EddyH]

IIRC Milltek had issues with their 100cell Race Cats failing MOT's and now sell them with 200cells with 100 as a special order item.

I had a blueflame 70mm system with 100 cell cat which caused the emissions light to come on. I had the light sorted and when MOT'd it passed the emissions test no problem.

 

[DPJ]

I had a blueflame 70mm system with 100 cell cat which caused the emissions light to come on. I had the light sorted and when MOT'd it passed the emissions test no problem.

I had no problems with my Blueflame & 100 cell cat /Revo St2 - well below the emisions limit.

 

[Tallpaul]

i'm sure all these stories of 100cell CATs that fly through emmisions testing is comforting for the original poster.

 

[EddyH]

i'm sure all these stories of 100cell CATs that fly through emmisions testing is comforting for the original poster.

Yes, I'm sure it is comforting that the fact he's chosen a 100 cell cat isn't the problem. More useful than your post that's for sure.

 

[Tallpaul]

Yes, I'm sure it is comforting that the fact he's chosen a 100 cell cat isn't the problem. More useful than your post that's for sure.

As nobody on here knows the specifics of his CAT, plus the fact he's attempting to clean it and also that not all 100cell CATs in the world have passed an MOT first time (search on here); then isn't it still possible it is his CAT to blame?

I'm not hoping it is, after all i wouldn't want to have to replace such an expensive part.

 

[EddyH]

As nobody on here knows the specifics of his CAT, plus the fact he's attempting to clean it and also that not all 100cell CATs in the world have passed an MOT first time (search on here); then isn't it still possible it is his CAT to blame?

I'm not hoping it is, after all i wouldn't want to have to replace such an expensive part.

That's why I suggested he speak to the exhaust manufacturer. When I had a problem with the emission light coming on Blueflame offered to swap my 100 cell cat for a 200 cell one.

 

[Brucel]

Why not just put the old cat back on for the MOT and then swap back afterwards?

Thats what I did when I decated my Astra? The garage that MOT'd my car did it for me no worries just cost me a tenner more.

 

[cupracraig]

take it for a long nice run before you take it to the mot station .

that should do the trick .

 

[bentaw]

is your car remapped

 

[chubbs]

got to agree with cupracraig go for a good blast it get it hot then should be fine my car was mot'd at a seat specialist they had to take my car around the block a couple of time to get it hot hot hot !

 

[StuLCR52]

cheers for the comments ppl. my emissions light has never came on, the problem with contacting my exhaust manufacture, is i bought it second hand! yea ill take it for a nice run that morning cheers ppl

stu

 

[Brucel]

Good luck with the test mate hope it goes ok...

Bruce

 

[Copra]

yep get it red hot before it goes in, and dont let it cool down...ie, get there just intime for your booking, not 30mins before

 

[CupraSteve]

if the exhaust is leaking it will fail, any leaks?

 

[goble]

but mil light is not on?

 

[StuLCR52]

Why not just put the old cat back on for the MOT and then swap back afterwards?

Thats what I did when I decated my Astra? The garage that MOT'd my car did it for me no worries just cost me a tenner more.

aint the easiest job on the LCR lol

 

[StuLCR52]

but mil light is not on?

nope it aint on the co was high but the hydrocarbons and lambda were fine