De-cat with or without flexi ?

[Big Matt]

Hi I am getting a de-cat pipe made & after looking at other threads I seem to notice that some people have a flexi bit .
As mine will be made to order once the flange arrives. should I have a flexi bit installed .

At the moment my pipe comes down to the cat then splits into 2 for about 1.5 - 2 foot then goes back into 1 .
I gonna get rid of the split into 2 & just have 1 pipe ,
Better or not ??

oh it has a full milltek & custom pipe at the moment I just want rid of the cat but I will pop it back on for the MOT.

[ridgeracer]

Hi I am getting a de-cat pipe made & after looking at other threads I seem to notice that some people have a flexi bit .
As mine will be made to order once the flange arrives. should I have a flexi bit installed .

At the moment my pipe comes down to the cat then splits into 2 for about 1.5 - 2 foot then goes back into 1 .
I gonna get rid of the split into 2 & just have 1 pipe ,
Better or not ??

oh it has a full milltek & custom pipe at the moment I just want rid of the cat but I will pop it back on for the MOT.

yes you should have a flexi bit installed to minimize stress on the EM/ preventing cracking

[Fat Audi 80]

On my exhaust the cats are hung off the gearbox mount which IMO negates the need for a flexi joint?

My Cats are replaced with bypass pipes after the MOT every year and these fit in exactly the same way as the cats themselves by hanging off some rubber bushed mounts attached to the underside of the gearbox.

The pipes off each cat then go directly back into the rear box. They do not go back into one at all.

Is this normal?

As I say, I do not see any need for a flexi joint if you replace the cats with like for like bypass pipes....

Cheers,

Steve.

[WabTheKing]

yes you should have a flexi bit installed to minimize stress on the EM/ preventing cracking

agree totally