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M5sime
Newbie


Joined: 02 May 2019
Posts: 31
Location: Buckinghamshire, UK


PostPosted: Mon Oct 21, 2019 11:32 am    Post subject: Wanted X-Pipe/Bypass for 997.2 Reply with quote

Hi - I am looking for a centre muffler bypass pipe for a 997.2 C2S.. Ideally the Fabspeed X-Pipe, but others considered.
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Phil 997
Le Mans
Le Mans


Joined: 05 Dec 2015
Posts: 15467
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Mon Oct 21, 2019 6:39 pm    Post subject: Reply with quote

this type from Haywood and Scott have been very popular with the guys on here .

https://www.haywardandscott.com/porsche/911/997/porsche-997-gen-2-centre-silencer-replacement-pipe.html
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M5sime
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Joined: 02 May 2019
Posts: 31
Location: Buckinghamshire, UK


PostPosted: Mon Oct 21, 2019 9:34 pm    Post subject: Reply with quote

Thank you ... I had looked at both designs and have not heard either in person. The connected X pipe seemed to be more akin to the OEM design vs the cross over version.

Fab speed vs Sharkwerks effectively as the originators I understand..

Is there consensus on the differences?
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James M-S
Suzuka


Joined: 11 Apr 2017
Posts: 1098
Location: Derbyshire

2009 Porsche 997 Carrera 2

PostPosted: Mon Oct 21, 2019 10:05 pm    Post subject: Reply with quote

Definite improvement with H&S, but only above 3500rpm. I waited a couple of years and then got the banana gundo as well.

Centre bypass gives most gain with PSE, so I hear.

Soundproofing material over rear arches would reduce tyre noise in the cabin.

With hindsight I would maybe have explored a full new system, but didn’t want anything too OTT. Current sound is OEM+. Sounds better outside the car than inside.

Get yourself to a local meet and get listening Thumb
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M5sime
Newbie


Joined: 02 May 2019
Posts: 31
Location: Buckinghamshire, UK


PostPosted: Mon Oct 21, 2019 10:10 pm    Post subject: Reply with quote

James M-S wrote:
Definite improvement with H&S, but only above 3500rpm. I waited a couple of years and then got the banana gundo as well.

Centre bypass gives most gain with PSE, so I hear.

Soundproofing material over rear arches would reduce tyre noise in the cabin.

With hindsight I would maybe have explored a full new system, but didn’t want anything too OTT. Current sound is OEM+. Sounds better outside the car than inside.

Get yourself to a local meet and get listening Thumb


Cheers ! I have PSE on a 997.2 and do believe those behind me get the best sound 😊.. I’m looking for a little more burble and the odd pop on liftoff.. the bypass is all I would do..
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Magic919
Barcelona


Joined: 05 Jun 2013
Posts: 1267
Location: Berkshire


PostPosted: Tue Oct 22, 2019 6:51 am    Post subject: Reply with quote

I have Sharkwerks and PSE and it’s a good combo. I preferred the idea of the cross as the X pipe can adversely affect output.
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M5sime
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Joined: 02 May 2019
Posts: 31
Location: Buckinghamshire, UK


PostPosted: Tue Oct 22, 2019 11:19 am    Post subject: Reply with quote

Magic919 wrote:
I have Sharkwerks and PSE and it’s a good combo. I preferred the idea of the cross as the X pipe can adversely affect output.


Hey Magic919 - where abouts are you? Profile says Berkshire.. I’m not that far away in Bucks (near Maidenhead).. would love to hear yours sometime.

When you say affect the output - do you mean noise? Gas flow?

Best, Simon
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Magic919
Barcelona


Joined: 05 Jun 2013
Posts: 1267
Location: Berkshire


PostPosted: Tue Oct 22, 2019 12:25 pm    Post subject: Reply with quote

The sound would differ a touch, but I meant power. Have a read of the Sharkwerks site and you’ll see what they said when they tested.

I’m not far from there usually. Currently in Italy but normally close to J5 M4. We could work something out.
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mjcs91
Newbie


Joined: 22 May 2019
Posts: 6



PostPosted: Wed Oct 23, 2019 8:11 am    Post subject: Reply with quote

I had PSE + Sharkwerks on my 997.2 - Great combination. Not stupid loud, just nice.

However if you're interested I had a custom made Inconel X-Pipe done by Brooke Race Exhausts that was on my 997.2 for a few months before I sold it.

VERY loud system.

I need to put it up for sale still.
 
  
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FZP
Estoril


Joined: 18 Jan 2015
Posts: 3795
Location: Cheshire


PostPosted: Wed Oct 23, 2019 8:48 am    Post subject: Reply with quote

Adding the 3rd muffler delete won't give you a sound anything like a 991 GTS on overrun. There are only 2 ways to get that.
1. ECU remap
2. On lift offs you put a little input to the accelerator to do it artificially.
I've got the Tubi system which has a cross over pipe as part of its set up, and the only way to get burbles is using method 2, but it's subtle at best. No pops though.

All our cars come with the same ECU map, so it won't vary from one car to the other.

At best it will release a bit of exhaust noise.

Just giving you my summation from all the info I've seen on the topic.
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mjcs91
Newbie


Joined: 22 May 2019
Posts: 6



PostPosted: Wed Oct 23, 2019 9:00 am    Post subject: Reply with quote

PSE + Sharkwerks give you natural burbles. It sounds great and more natural, not like the fake crap on every modern sports car.

Also You won’t get pops and bangs unless you remap it.

991 S/GTS crackles are a bit fake anyway. And in my opinion don’t suit the 911.

A 991 GT3 even with an exhaust on doesn’t pop and bang.
 
  
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M5sime
Newbie


Joined: 02 May 2019
Posts: 31
Location: Buckinghamshire, UK


PostPosted: Wed Oct 23, 2019 3:19 pm    Post subject: Reply with quote

mjcs91 wrote:
I had PSE + Sharkwerks on my 997.2 - Great combination. Not stupid loud, just nice.

However if you're interested I had a custom made Inconel X-Pipe done by Brooke Race Exhausts that was on my 997.2 for a few months before I sold it.

VERY loud system.

I need to put it up for sale still.


Thank you! Sounds too lively for me.. I am after a notch-up on the PSE..
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M5sime
Newbie


Joined: 02 May 2019
Posts: 31
Location: Buckinghamshire, UK


PostPosted: Wed Oct 23, 2019 3:22 pm    Post subject: Reply with quote

Thanks all for the feedback.. I will have a think and in the mean-time if anyone is selling off their X-pipe to go back to stock - welcome it
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mjcs91
Newbie


Joined: 22 May 2019
Posts: 6



PostPosted: Wed Oct 23, 2019 3:22 pm    Post subject: Reply with quote

M5sime wrote:
mjcs91 wrote:
I had PSE + Sharkwerks on my 997.2 - Great combination. Not stupid loud, just nice.

However if you're interested I had a custom made Inconel X-Pipe done by Brooke Race Exhausts that was on my 997.2 for a few months before I sold it.

VERY loud system.

I need to put it up for sale still.


Thank you! Sounds too lively for me.. I am after a notch-up on the PSE..


I'd definitely go for SharkWerks then (or a similar by-pass pipe).

To be honest the SharkWerks system is very simple, a decent welder / exhaust shop could probably make something similar if cost was a deciding factor.

I ended up putting the SharkWerks back onto my 997.2 because my other system was too loud for track days.
 
  
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