DeCat 4.2?

[Jimbolian]

So, aside from the reduced cabin heat, better throttle response and hit on MPG ( not overly applicable but i'm a bit anal.. ) any side effects to decating?

I was thinking decat pipes that look like cat's, so if the PFY at the MOT station does the test it will still pass..

Does it make it much louder or just a nicer sound?

Have a local exhaust chap who i'm sure will be able to make somthing up for a reasonable price, just wondering on any negatives ( aside from the possible conversation with Mr and Miss Rozzer ).

Or is it worth going the whole hog, bunging the MOT chap an extra case of beer and getting the cross over pipes as a replacement for the Cat's?

[Jimbolian]

Just found Scotty's video.. so nevermind, decat it is. Cheers!

[RUSSELLM]

Great compromise.

Reduced cabin heat.
Working set of cats at hand for MOT time.
Doesn't make any difference in sound at low revs, so you don't nause the neighbours.
And adds an angry 'bark' when you get to the business end of the Rev Counter.

[Tanguero]

Jimbolian said:

I was thinking decat pipes that look like cat's, so if the PFY at the MOT station does the test it will still pass..

It is not a visual check on cats that will fail it with a decat, it is the effect on emissions that it will fail on. Unless of course you have a bent MOT garage willing to risk their livelihood by giving out dodgy passes.

Besides its only half an hour job once a year to stick the cats back on for the test.

[Jimbolian]

Sold! And it just past it's MOT too, so 11 and a bit months of decat joy. Looking forward to the Bark!

[Rawhide]

Jimbolian said:

Just found Scotty's video.. so nevermind, decat it is. Cheers!

What video is that? I have a decatted 4.5 but to be honest I find the noise that bit too much. It also make trackdays a bit harder to get on.

[Jimbolian]

Here's the link:

http://www.youtube.com/watch?v=jNMZM2cr6Sc

[scotty_d]

Thats why i went the silenced de-cat route my system was very loud even at 70mph it was over the top. It is great now it just settles down on a cruise and is more or less silent on light throttle at 70. Not to much at tick over as said and i can slip the cats back in for the MOT when the time comes.