So I've ordered a Milltek Cat Back from DemonTweeks.

My question is, do I get the Milltek Sports Cat pipe? Or do I buy a standard vRS down pipe and remove the cat innards?

Thoughts guys?

Neither, buy a decat pipe.

miltek decat pipe on ebay around £180 although i read piper were better some where ?

My MOT tester told me a cat needs to be present/visible when being tested. So a decat is out the equation.

Well if you wanna standard cat to smash up the insides I got one in the garage you can have for £35+ post

But it's a real grey area on dervs it seems, some pass some don't!

Yea I already asked the guy who MOTs my cars and he said it needs to be present if factory.

Where you located Josh? Is it the whole downpipe inc cat?

I thought it only needed to be present if the car was subject to a proper emissions test (i.e a petrol car), not a particulate test like a diesel is?

I guess it comes down to the testers discretion/ ignorance?

My vRS was MOT'd about a month ago and it crossed my mind to ask when I picked the car up. I was told it needs to be present on all cars that have/had them fitted now.

He was the one who suggested removing the innards. He said he had to do it to get a car through an MOT.

I would ring a few garages up to ask them, as I asked the ones who MOT my car and they said diesels don't need a cat.

New legislation that was previously pending has now come into force I believe.

By the book so to speak, diesels must have a cat fitted if it was fitted from the factory. However, the cats are only there for smoke purposes as far as I'm aware, hence why some garages will let them go through and some won't.

I believe another new mot legislation is if your ecu light is on it's a fail!!

All money making....

Read the rules properly. (This is the latest ones)

"Visible cat test is only needed for cars that qualify for a full emissions test"

You DO NOT need a cat on a Fabia vrs. Have a search on here for the link, I cant be bothered to find it and put it up again. Any tester telling you otherwise is either stupid or trying to mug you off.

Oh and in answer to your question, the piper decat is better, again there was a recent post on it have a read.

Read the rules properly. (This is the latest ones)

"Visible cat test is only needed for cars that qualify for a full emissions test"

You DO NOT need a cat on a Fabia vrs. Have a search on here for the link, I cant be bothered to find it and put it up again. Any tester telling you otherwise is either stupid or trying to mug you off.

As per Matt's post, here's the section from the MOT manual:-

http://www.motinfo.gov.uk/htdocs/m4s07000101.htm

In fairness it does clearly state 'On petrol engined vehicles'. Hence reading from this it seems that a cat on a diesel is indeed not required for MOT. My local 'trusted' tester must've either misread the new rules or was fibbing :-/

Well mine passed bout 3 weeks ago with decat