Scirocco Central

Hi,

I have a 2009, VW SCIROCCO GT TSI 2.0. It has today failed it's MOT due to it having a de-cat exhaust system which o was unaware of when I bought it. It failed due to not having a catalytic converter and failing the emission tests.
The price for a new cat is extreme! Is there any way around this?

You could ask the seller why they sold you a car without a legally required component. Other than that, fit a cat.

Have a look at Sports Cats from the likes of Milltek. Cheaper than OEM.

If your car doesn't have a cat fitted it must have a map to map out the post cat lambda sensors otherwise the EML would be on all the time.

Not that I would condone this route but some MOT testers will turn a blind eye to de-cats.

You need to try to find a mod friendly MOT station - if you run the car hard just before the emissions test it can pass (just), basically need to give it a good thrashing and then pull into MOT station and have it tested there and then.

I doubt very much it will pass the emissions test without a cat fitted no matter how much you thrash it just before the test.

With some Sports Cats you need to get them nice and warm to get them to pass.

Cuprabob wrote:I doubt very much it will pass the emissions test without a cat fitted no matter how much you thrash it just before the test.

I actually used to think the same, but have read many reports of people with de-cat passing their emissions this way - only just mind you, with it being very close to the permissible limit.
They would be a lot over the limit if the car was just dropped in and then tested sometime later...but running the test straight after a very hard run seems to massively reduce the emissions to the point it might just pass.

Obviously this will vary from one engine type to the next

You also need a mod friendly MOT station as technically if the car had a cat from factory and now it doesn't have one, regardless of the test results its an instant fail.