what happens if you get caught without any cats?

I was just wondering what would happen if you were unlucky enough to be stopped by the police and were found to fail a roadside emissions test because you took the cats off. I’m just wondering if it is worth the hassle removing my second cat. I still need a restrictor ring to keep boost down to 1.2bar so it cant be too restrictive, I also guessed it's better to keep EGT's down help responsiveness. I would also like somewhere to put a wideband sensor and in the second decat seems to be the best place.

Anyway, if there are serious penalties for removing all cats then I think I will live with my current set up.

Would probably give you a defect form and ask you have corrected and proven by mot station etc like what they do if you have lights out etc.

buy a high flow cat?

Speaking practically, you would need to be stopped and examined by a combined VOSA/Police check before you need be worried, VOSA sometimes carry calibrated emissions checking equipment mobile to these roadside checks. They are unlikely to use them on a general roadside safety check...unless thay are specifically only looking to check emissions (rare), they do not usually have time to check this aspect.

If you did fail a roadside emissions test, in practice no-one is going to be able to definitively check whether you have cats fitted, so the police issue you with as vehicle rectification certificate, and you refit your cats and toddle off to someone like me (MOT Authorised Examiner), and I am allowed to charge you £10 to check and certify that your emissions meet the appropriate MOT regulation for your car.

I am not suggesting that you run your car without cats, as you could be polluting our environment, however currently the likelihood of being caught is minimal, and the worst scenario is that you will be made to put them back on (skinned knuckles) and have to go to your local MOT guy.

I've never heard of anyone being prosecuted, although someone on this board will probably know someone. I get 6-10 rectification notices a month from my local bobbies, and it is nearly always for faulty lights, etc, something obvious.

Just my two penneth...

Useful info there, cheers

Thanks very much torque monster Good bit of usefull info

Speaking practically, you would need to be stopped and examined by a combined VOSA/Police check before you need be worried, VOSA sometimes carry calibrated emissions checking equipment mobile to these roadside checks. They are unlikely to use them on a general roadside safety check...unless thay are specifically only looking to check emissions (rare), they do not usually have time to check this aspect.

 

If you did fail a roadside emissions test, in practice no-one is going to be able to definitively check whether you have cats fitted, so the police issue you with as vehicle rectification certificate, and you refit your cats and toddle off to someone like me (MOT Authorised Examiner), and I am allowed to charge you £10 to check and certify that your emissions meet the appropriate MOT regulation for your car.

 

I am not suggesting that you run your car without cats, as you could be polluting our environment, however currently the likelihood of being caught is minimal, and the worst scenario is that you will be made to put them back on (skinned knuckles) and have to go to your local MOT guy.

 

I've never heard of anyone being prosecuted, although someone on this board will probably know someone. I get 6-10 rectification notices a month from my local bobbies, and it is nearly always for faulty lights, etc, something obvious.

 

Just my two penneth...