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YOUR RESEARCHNew Exhaust needed
Leading reported evidence
Install spyder performance silencers
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I fitted Spyder performance silencers to mine last week.
Check manifold bolt condition, new manifolds will make a difference
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Suggestion
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..
Leading evidence: 'Install spyder performance silencers' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'nicer sound by all reports' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check manifold bolt condition, new manifolds will make a difference' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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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).
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Suspected cause
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.
Check manifold bolt condition, new manifolds will make a difference
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Suggestion
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..
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Suggestion
I think you'd be fine Rob, might be tempted to do it with engine off or vacuum disconnected though.
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Check manifold bolt condition, new manifolds will make a difference
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Suggestion
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..
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Performed · outcome unconfirmed
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).
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15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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Generation: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
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
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.
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
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
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!
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?
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..
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.
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.
