Sport Cat or Cat Bypass?

[Owen VR6 0]

Just wondering which one is available for my VR and which produces the best results.

[Jim 2]

Well as your car is post '92, you're going to need to know a "friendly" MOT test station to have any chance of passing your MOT..

 

So your best bet is probably a sports cat. They're not bank bustingly expensive - Milltek do one, I believe for about £250..

[Owen VR6 0]

Any idea what sort of gain you'd be looking at after fitting?

[MK1Campaign 0]

Im not sure having a friendly MOT station will matter now its all computerised?

 

Try http://www.sportscats.co.uk they have VR6 sports cats for £199.

[Jim 2]

I believe there are still plenty of ways around the emissions test. I don't know of any specific tricks or anything, but I understand its still easy enough to work around.

[CrazyDave 0]

Really depends on the MOT station (just been through all off this with mine!), and a VR running properly will pass an MOT without a cat, but only if the tester doesn't notice it's missing.

 

Get some V bands welded onto the standard cat to put in for the mot and have a bypass pipe with V bands for the rest of the year. Easy to change over then.

[Taggart 0]

What's involved in removing a cat?

[CrazyDave 0]

Removing the cat from a 10 year old+ car usually involves grinding and cutting of the 3 bolt section at the front from the downpipe as the bolts will be very seized up or under sized or both. The other end will also be pretty tight but should come off in one piece as it's the usual exhuast sleeve and clamp type stuff.

 

Milltek and others do a standard fit cat bypass pipe, but it may need the rest of the system to fit or adapters (as on a Jetex 2.5").

 

But if you want to swap the cat back in I'd highly recommend getting V bands fitted to the sections of pipe, as this makes it much easier to swap over at test time.

 

And always remember that it is a legal requirement that post 92 cars are fitted with a catalytic converter.