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AlanPM
Silverstone


Joined: 10 Dec 2016
Posts: 126
Location: Tunbridge Wells, Kent

2003 Porsche 996 Carrera 4S

PostPosted: Mon Sep 30, 2019 11:29 am    Post subject: New Exhaust needed Reply with quote

Hi, So my PSE has corroded actuators so stuck on LOUD. It has stopped me doing track days as its 112DB and limit is 102DB at Brands of an evening.

I fancy the Spyder Performance switchable stainless silencers as they can wire in to the PSE button and operate as the same.

Should I go the whole hog and get stainless headers and 200 cell cats to go with it or will I just end up too noisy again on "quiet" setting to be able to track it?

Photo for interest
_________________
2003 911 C4S cabriolet, manual,
Polar Silver with Metropol Blue interior, LTT, SSK, wheel spacers, Design Tech CAI, BMC Sports filter, Remap, RS engine mounts.
2007 BMW 335i M Sport
 



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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17141
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Sep 30, 2019 11:42 am    Post subject: Reply with quote

I'd just do the boxes unless someone can guarantee you won't be too noisy.

Szymon has just fit a switchable system on his C4S that sounds well. Think it was £650.
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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bullet-proof_biscuit
Newbie


Joined: 10 Jun 2019
Posts: 44



PostPosted: Mon Sep 30, 2019 12:32 pm    Post subject: Reply with quote

Could just get new actuators? they are vacuum actuated so just unplug the vac hose and replace, unless it's the flap is stick then need to use anti-seize spray and work it loose. Seems a bit much to replace the lot just for that.

Having said that, if you do replace all, I'll be willing to buy your old PSE mufflers if they are not too corroded.

Also check your manifold bolt condition, new manifolds will make a difference to performance rather than noise, however stainless will give a bit more raspy sound, anyway if your manifold bolts are bad then removing then will add significantly to the costs to R&R if they need drilling etc..

Beers, HH
 
  
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cvega
Spa-Francorchamps


Joined: 25 Feb 2013
Posts: 288
Location: Cambridge


PostPosted: Mon Sep 30, 2019 3:12 pm    Post subject: Reply with quote

Spyder is quite loud, especially on full chat. I'd double check it's gonna pass. I'd definitely hold off on 200 cell as they will make it louder..
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2003 996 C2 (Ohlins R&T suspension, Toyosport/Spyder exhaust)
 
  
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555 Paul
Newbie


Joined: 02 Nov 2016
Posts: 7



PostPosted: Tue Oct 01, 2019 2:03 pm    Post subject: Reply with quote

I fitted Spyder performance silencers to mine last week. My car still has the standard catalytic convertors and manifolds.

Here is a video demonstrating the 2 modes, switching between them using the standard PSE switch.

https://www.youtube.com/watch?v=G6GgOteFeus
 
  
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deckster
Newbie


Joined: 12 Jul 2015
Posts: 49



PostPosted: Tue Oct 01, 2019 2:33 pm    Post subject: Reply with quote

I replaced my PSE with the Top Gear switchable system which was pretty much just a straight swap and easy to wire into the existing system (according to Northway, anyway).

112dB sounds crazy loud though. Mine passed the sound check at Castle Combe (100dB limit) on both the original PSE and the Top Gear replacement in loud mode so I can't see how yours comes in at 112!
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7324
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Tue Oct 01, 2019 3:21 pm    Post subject: Reply with quote

Assuming you've not, I would explore whether the existing PSE can be fixed... it really is a great sounding system. If the valves are fubar'd then they can be replaced, either like for like or improved;

https://www.fabspeed.com/blog/what-exhaust-valves-are-on-your-car-fabspeed-motorsport/

Oddly these are from a UK company, but with a US agent which is annoying.

My PSE has become very reluctant to go quiet. Sometimes it does, after a few minutes, some times it doesn't. Cant tell if its one side or both, but I think it may just be the OS silencer not working. Does anyone know if I will do the valves any harm by lubing them and moving them open and shut by hand to free them up?
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"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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jonno_
Nürburgring


Joined: 29 May 2014
Posts: 444
Location: Oxfordshire

2005 Porsche 997 Carrera 2S

PostPosted: Tue Oct 01, 2019 5:30 pm    Post subject: Reply with quote

I think you'd be fine Rob, might be tempted to do it with engine off or vacuum disconnected though.
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997.1 Seal Grey c2s manual, ltt, mobridge, zunsports, Carrera S IIs (summer)
 
  
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AlanPM
Silverstone


Joined: 10 Dec 2016
Posts: 126
Location: Tunbridge Wells, Kent

2003 Porsche 996 Carrera 4S

PostPosted: Tue Oct 01, 2019 7:15 pm    Post subject: Reply with quote

Thanks for the comments chaps, I think it’s s good enough excuse to go Stainless!
_________________
2003 911 C4S cabriolet, manual,
Polar Silver with Metropol Blue interior, LTT, SSK, wheel spacers, Design Tech CAI, BMC Sports filter, Remap, RS engine mounts.
2007 BMW 335i M Sport
 
  
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asterix_the_gaul
Barcelona


Joined: 20 Dec 2008
Posts: 1284
Location: Cheshire

1999 Porsche 996 Carrera 2

PostPosted: Tue Oct 01, 2019 7:23 pm    Post subject: Reply with quote

200cell cats really turn up the volume: I have PSE and had the choice of cats or manifolds but my bolts looked like they were off the titanic so chose to add 200cell cats. It's now very loud on loud setting.

I think if I was doing it again I would go for the cheap eBay stainless manifolds and not the 200cells, it's probably a nicer sound by all reports.

There's usually much more work and therefore cost getting the rotten manifold bolts out, a jig to drill them out is often required if they snap, but it's balanced by the much lower price tag Of The manifolds.

It's up to you, but I would suggest hearing a few different setups in the flesh. They are also different from the drivers seat obviously..
_________________
1992 944 S2 Cabriolet, Cobalt Blue/Classic grey -gone!
1995 993 C2 Cabriolet, Midnight Blue/Marble grey -gone!
1999 996 C2 Coupe, Ocean Blue/Graphite grey
2002 E46 M3 Cabriolet, Laguna seca blue/LSB
 
  
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Panda996
Trainee


Joined: 19 Aug 2016
Posts: 66
Location: Surrey


PostPosted: Fri Oct 04, 2019 9:14 am    Post subject: Reply with quote

This might help if still deciding whether to keep the originals.

http://www.911uk.com/viewtopic.php?t=115811&postdays=0&postorder=asc&highlight=pse+repair&start=0

p.s. and they still don't look any different from day they were done.
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996 Targa
 
  
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996 Porkster
Newbie


Joined: 24 Feb 2019
Posts: 15



PostPosted: Thu Nov 07, 2019 9:36 pm    Post subject: Reply with quote

Just wanted to add to panda's post about getting the seams welded. I had the seams welded on the PSE rear mufflers last Sunday. Posted some before and after pics of the worst one. They were done by PCW Exhaust Mods in Bedfordshire. He also welded a split flexi pipe at no extra cost. Top bloke.
 



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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7324
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Thu Nov 07, 2019 9:48 pm    Post subject: Reply with quote

Looks an excellent job... did PCW come to you or did you visit him?
_________________
"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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996 Porkster
Newbie


Joined: 24 Feb 2019
Posts: 15



PostPosted: Thu Nov 07, 2019 9:50 pm    Post subject: Reply with quote

Robertb wrote:
Looks an excellent job... did PCW come to you or did you visit him?

I went to visit him. I don't think he does home visits anymore
 
  
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fot0
Newbie


Joined: 03 Apr 2018
Posts: 31
Location: Thames Valley


PostPosted: Fri Nov 08, 2019 2:31 pm    Post subject: Reply with quote

Good job. I have a spare set that I could get re-seemed Very Happy
 
  
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C4Silver
Spa-Francorchamps


Joined: 14 Aug 2019
Posts: 273



PostPosted: Fri Nov 08, 2019 2:47 pm    Post subject: Reply with quote

I’d be looking at replacement valves and if needs be re seaming it, if that fails then put O.E. Boxes it, after market exhausts are not one of my personal favourites, they’re cheap and rarely last any where near a s long as the originals, either the brackets corrode or the packing gets blown out and becomes really raspy, not everyone’s cup of tea I know because every one likes a loud exhaust, in my opinion the standard system cannot be beaten, maybe by an Akroprovic set up but That’s been made using the best materials. If they’ve been on there for 15 years give or take I’d be reluctant to put anything on that’s not going to fit exact and not going to last anywhere near as long.
 
  
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TV8
Newbie


Joined: 08 Nov 2019
Posts: 41
Location: Bromley


PostPosted: Wed Nov 20, 2019 10:52 pm    Post subject: Reply with quote

112 dB at what revs? That is very loud if measured at a metre at 3/4 revs.
 
  
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Lukec4s
Newbie


Joined: 20 Jul 2018
Posts: 47
Location: Watford


PostPosted: Thu Nov 21, 2019 10:48 pm    Post subject: Reply with quote

I have the spyder system fitted. For a while
It was stuck in loud and failed Bedford’s noise test. Popped back to the service centre and they fixed it. My plan is to try Bedford again in Dec.

As for the sound I would say at idle it’s much the same. When reving up
The loud mode had a nice grumble much like the video posted a few comments up. Quite mode does reduce sound I just hope it’s enough to get past the noise test. (Revs held at 4500)

As for the Customer service they are great. It’s part of Eporsche.
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Ferrari 360
996 c4s
Clio 182 track car - it’s fun
 
  
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