High Flow Cats- X-pipe vs Separate Pipes in terms of noise?

High Flow Cats- X-pipe vs Separate Pipes in terms of noise?

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StreetDragster

Original Poster:

1,523 posts

219 months

Monday 7th September 2015
quotequote all
Hi all,
Regarding high flow cats on NA Porsches, I notice that for my 997.1 C2S there is a number of different options, seemingly split in pipework design.
One design is higher flowing cats on stock (separate) pipe designs, with each bank of 3 cylinders separate.


The other design of an X-pipe, where each bank is connected together in the middle


How do these two designs effect things in terms of sound? I'm not really interested in any power increases.
(I have the Gundo hack BTW)
Thanks in advance
Matt

StreetDragster

Original Poster:

1,523 posts

219 months

Monday 7th September 2015
quotequote all
I think they are plumbed together in the x pipe configurations, no idea why though or whether it's preferential or not

Matt

StreetDragster

Original Poster:

1,523 posts

219 months

Tuesday 8th September 2015
quotequote all
Thanks for all your replies chaps, if there is no obvious benefit I'll just get the cheaper one.

Many thanks
Matt