Can i LEGALLY take the catalytic converter off of my H reg Audi 100?

Question

It's the 2.3E auto. I've heard of other people taking the cats off of their similarly aged cars, but, as i drive for a living, i don't want to break the law.

Answer 1

1993 (J) reg cars in the UK were the first to have cats fitted as a requirement for emissions testing.

If your car was registered before this you can remove the cat and fit a straight through pipe, or replace the exhaust system with a unit from a non-catalised car.

The MOT test is carried out using a percentage of Co not to exceed 4.5%.

By the way- catalisers do NOT reduce emissions, they just convert Co to Co2 plus palladium, irridium and other heavy metals, and we all know that Co2 is a 'green house gas' don't we.

Hope this helps.

Answer 2

If the vehicle was made after 1978, in most states it is illegal to tamper with the emissions system. Some states go even further back. I know of none that let you modify one made after 1978. Your Audi is much newer that this.

Why would you take it off anyway? If it is working properly it will not hinder your performance in any way, and has nothing to do with your economy. The only reason people removed them in the early 80's was so that they could use the cheaper regular (leaded) fuel. As this fuel is no longer produced, I see no reason to remove a working catalytic converter.

Answer 3

You can take the cat off of any car, but you can't legally do it if a cat is OEM. You can only replace them with another cat if yours is somehow damaged.

There are high-flow cats out there that will give you less restrictive exhaust (more performance), and still meet emissions standards. You can expect to pay a couple of hundred bucks for them. On the plus side, you will also improve your gas mileage by a little bit too.

Answer 4

No you cant so you just do what i do, get a de-cat replacement so your system isn't strangled by it and replace it come MOT time, that way you wont get stung for the cost of replacing the thing when it dies.

Bottom line is for over 80% of car journeys in the UK a catalytic converter hasn't even got up to temperature before the journey ends - but hey it keeps the enviro mentals happy, even if we all get buttfucked for the cost of replacing them.

Answer 5

You should check the laws for your state. I bought a car when I lived in Cali and couldn't get it to pass smog/emissions. When my mechanic looked into the reasons, he noticed there was no catalytic converter. I could have sued the guy that sold me the car but I just had him pay for the parts and labor.

What year is your car?

Answer 6

I don't the right answer for this but cats were compulsory from J Reg onwards manufactures like Volvo, Audi and Saab started putting in cat converts around H reg (a year before)

Answer 7

If your car has a cat it's there for a reason (Emissions). It is illegal to temper with any Emission equipment on cars regardless of age.

If your car is old enough and does not need to pass emissions who will ever know if you take the cat off?

It is your car and do what you want, just know that it is not legal to remove any emission equipment of cars regardless of age, type of car (Street legal Cars) .

Answer 8

Yes you can. Legally too! You will need a cat bypass pipe making up to fit in its place. You may get a SMALL performance gain. Not really of any huge benefit unless you do further mods.

Answer 9

the law in england for the cat test is1992 or k reg anything befor that year they do not have a cat test

Answer 10

the cats only there to reduce the emissions of your car so as long as they are above the legal limit then yes but is it really worth it
thats only in the UK