My S has failed it's MOT because it has got a sports cat on. They say the emissions are double what they should be.

Anyone got any idea what i could do?

Carn't believe this, this is why i didn't put a straight pipe on so i didn't have the hassel on it's MOT.

 

afraid yourll have to take it off and replace it with OE or find a friendly garage maybe they didnt let the engine warm up properly before doing the emission test ? i know my garage left it running for ages when i took here in for the MOT last week.

 

Straight pipe would have caused the same problem, you need to keep your OEM CAT for MOTs

 

Whats the point of a sports cat in that case

 

The OEM Cat was f**ked thats why I changed it. When we took it off it was ratterling around inside.

 

sounds a bit like my cat, looking at getting a replacement cat at the mo

 

Breakers are your friend

 

What is the difference between a sports cat. and a straight pipe?

Did anyone tell you the car would pass the MOT with it?

 

The term sports cat is generally described as one which gives a high flow, but still contains catalyst and is intended to pass an MOT.

Im not aware anyone makes one for the S, and not really sure it would be worth it for the ease of removing a decat pipe.

A de-cat is a straight pipe, sometimes with a resonator inside. It does nothing for your emissions.

Which one did you buy??

MB