Stainless Exhausts

[NorrS2]

Right Chaps! Now I've fixed my boost leak - it's been spotted that my original exhaust is now starting to split at the seam around the back box area and leaking slightly. It wouldn't fail the MOT - yet, but I'm going to have to replace it in any case in the near future.

My questions are:-

1. Who make the best S/S system and how much is it?

2. I've been told that if it doesn't have a CAT, it could fail emission test much easier?

3. Does it affect my Homefry in any way?

Thanks in advance.

[Dr H]

An ABY will not pass an MOT without a CAT. BTDT

[S2 Ant]

Depends on who ya know

[Fat Audi 80]

An ABY will not pass an MOT without a CAT. BTDT

Mine has passed 7 years in a row...... (That was the previous owner though, a very conciensious guy too.) I will let you know how I get on in January.....

[Dr H]

He must have had a nice friendly MOT guy. If your car has no CATs then it will fail the emissions test of the MOT if it is done by the book.

The emnissions without the CAT are no where near the limits they need to be. ABY is post 1992 and therefore has to meet the lower emissions limits.

I have the printouts from mine and it's the CO levels that it fails on. They were btween 2.5 and 3 times what they should be. This makes sense as CATs turn CO into CO2 and water.

[Jamo]

Yeh but theres a loop hole for emission testing on modified cars if the MOT tester knows his stuff.
This was coming from my mate in "The Fuzz", i'll ask him again just in case he was trying to pull my leg.

[Fat Audi 80]

He must have had a nice friendly MOT guy.

The emnissions without the CAT are no where near the limits they need to be. ABY is post 1992 and therefore has to meet the lower emissions limits.

I have the printouts from mine and it's the CO levels that it fails on. They were btween 2.5 and 3 times what they should be. This makes sense as CATs turn CO into CO2 and water.

I was under the impression that it did pass the emissions test and he could prove by using a DOT document that a CAT was not required as long as it passed emissions.....

Fingers crossed for January....

[Dr H]

Yeah no CAT is required it just needs to pass the emissions test for a POST 1992 car.

AFAIK no one has managed to do that with a de-catted ABY without the tester being *friendly*. Good luck though

[Pete_RS2]

Yeh but theres a loop hole for emission testing on modified cars if the MOT tester knows his stuff.
This was coming from my mate in "The Fuzz", i'll ask him again just in case he was trying to pull my leg.

There may be some truth in this. Mine failed the emissions test earlier this year but the MOT tester passed it because it had been chipped. I didn't stop to ask any questions - I just took my MOT ticket & ran.

But according to the MOT Inspection Manual:

Vehicles fitted with modified engines
If an engine has been modified in any way, it still has to meet the exhaust emission requirements according to the age of the vehicle.

Can any of the MOT testers on here throw any light on this ?

Yeah no CAT is required it just needs to pass the emissions test for a POST 1992 car.

I seem to remember reading somewhere that cars first registered after Aug '95 must have a CAT fitted ?

[martinjs]

At the meet at gregs dads garage earlier this year we had lees car hooked up to the emmisions tester, mihnea was having a play with various settings bur just couldnt get the emissions low enough.

martin

[Greg_S]

although lees is a higher miler now so a lower mileage one may be better.

Greg

[NorrS2]

Can anyone throw any light on points 1 & 3 please?

[porkkis]

1. Here in Finland BN-Pipes seems to be quite popular so I guess they're good. www.bn-pipes.de Some of the forum members might have experiences. Check the rs2 section as you seem to have an avant. It's full 3 inches and not 70mm like coupe version.
3. I wouldn't worry about that