Exhaust Pipe - 2 or 4
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Joined: Jul 2012
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Exhaust Pipe - 2 or 4
I was at the dealer today and noticed that the 997 Turbo has only two exhausts (hidden inside those big tips) - this is also more obvious in the GT3's.
Why is it that the 997s has 4? I suspect that the CS does not need all four, and is then only for aesthetic reasons?
I was also under the impression that it is the 2nd (the smaller pipe, at least for the 997.1) that has the PSE valves that make me smile? But this can't be the case as where would they be for the TT?
Any thoughts?
Why is it that the 997s has 4? I suspect that the CS does not need all four, and is then only for aesthetic reasons?
I was also under the impression that it is the 2nd (the smaller pipe, at least for the 997.1) that has the PSE valves that make me smile? But this can't be the case as where would they be for the TT?
Any thoughts?
Last edited by Farside; Oct 26, 2012 at 08:17 AM. Reason: spelling
Rennlist Member
Joined: Mar 2006
Posts: 6,570
Likes: 89
From: Austin
I was at the dealer today and noticed that the 997 Turbo has only two exhausts (hidden inside those big tips) - this is also more obvious in the GT3's.
Why is it that the 997s has 4? I suspect that the CS does not need all four, and is then only for aesthetic reasons?
I was also under the impression that it is the 2nd (the smaller pipe, at least for the 997.1) that has the PSE valves that make me smile? But this can't be the case as where would they be for the TT?
Any thoughts?
Why is it that the 997s has 4? I suspect that the CS does not need all four, and is then only for aesthetic reasons?
I was also under the impression that it is the 2nd (the smaller pipe, at least for the 997.1) that has the PSE valves that make me smile? But this can't be the case as where would they be for the TT?
Any thoughts?
Drifting
Joined: Feb 2011
Posts: 3,024
Likes: 65
From: Austin, TX
Appears cosmetic... one 62.5mm exhaust pipe on each side of the car which is attached to dual SS tips for the C2S stock exhaust. Why one large and one small tailpipe tips with PSE? likely for appearances. Even my aftermarket FVD exhaust system with 70mm pipes throughout ends with a "Y" split into very large dual tail pipes. Aesthetically "tacticool" with 4 barrels in back but I think the functional benefits are minimal.
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Joined: Dec 2008
Posts: 134
Likes: 71
On the PSE exhaust there are two exit pipes per muffler (4 total exhaust pipes):the large one is the main/regular outlet pipe that handles 100% of the exhaust gasses when the PSE valve is closed. When the PSE valve is open it lets exhaust out the small tip through a separate bypass pipe. ie: 2 outlet pipes per side (not cosmetic). Not sure why they made the inner tips smaller other than to visually identify the PSE as different than standard.
It does sound very good.
John
It does sound very good.
John
