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911uk

PSE or not?

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YOUR RESEARCHPSE or not?

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Install on mine i can certainly agree

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Performed · outcome unconfirmed

Having had the PSE with the switch installed on mine I can certainly agree with the above!

PSE or not?
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Leading evidence: 'Install on mine i can certainly agree' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install on mine i can certainly agree' (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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Install on my targa

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Performed · outcome unconfirmed

My MPG dropped by over 20% after I had the PSE fitted on my Targa.

PSE or not?

Run without the switch

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

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Suggestion

I've for the last 3 years run without the switch but for selling purposes decided to fit the necessary gubbins to make it switchable.

PSE or not?
Frequently discussed actions (3)

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Install on mine i can certainly agree

No successful repair reported for this finding.

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Unsuccessful attempts
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Discussions
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Discussions that performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Having had the PSE with the switch installed on mine I can certainly agree with the above!

PSE or not?

Install on my targa

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

My MPG dropped by over 20% after I had the PSE fitted on my Targa.

PSE or not?

Run without the switch

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I've for the last 3 years run without the switch but for selling purposes decided to fit the necessary gubbins to make it switchable.

PSE or not?
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Considering a PSE for my 996 C4S. I know OPC doing a deal on them at mo so seriously considering. Is this a good add on? how does the switch work as I see some have not fitted this? would OPC fit one without the switch if that is a better option? Migration info. Legacy thread was 128404

POST 2Original post

Yes! Where in the Midlands are you as you could hear one in person if you are close by. The switch activates a vacuum that opens and closes a baffle inside the cans. By default the cans are open (ie. noisy), applying the vacuum closes them making them sound quieter - still a little different to the standard exhaust however. I've for the last 3 years run without the switch but for selling purposes decided to fit the necessary gubbins to make it switchable. Not a difficult job if you can remove your rear PU, read a wiring diagram and know what to do with the relay board. Word to the wise don't connect the pink and gray wire......it's the speedo feed, you don't want the exhaust quieten itself between 30-50mph do you? An essential option!!!! Migration info. Legacy thread was 128406

POST 3Original post

The most important option on a 996!! Migration info. Legacy thread was 128413

POST 4Original post

Take a look at the thread on here (page2 on 996 forum) called "original Exhaust parts for sale" - started by db. This maybe of interest - depending on what you are trying to do. I have just got a set of these cheap PSE alternatives and can add my vouch for the good quality of the modded mufflers. Very easy purchase too through Paypal, took about a week to arrive. Food for thought ...maybe...!! Migration info. Legacy thread was 128418

POST 5Original post

A really good option - and the OPC will fit it without a switch - and for quite a bit cheaper. The other options are: Avoid RSRs from Gert at Carnewal I had them and they were awful, took them off Try EBay modded mufflers - a few have them on here and they also sound much better than standard. Both other options are around �300, not sure about PSE without switch , but �1500 with. Migration info. Legacy thread was 128442

POST 6Original post

No decision IMHO. PSE everytime. I have without switch and without 30-44mph quiet 'bit'. the best option on my car. Migration info. Legacy thread was 128445

POST 7Original post

Your car did sound great with it for sure. Migration info. Legacy thread was 128446

POST 8Original post

Hi DamianC4s, do you have the switchable mufflers then? (Just not wired to a switch?) I have a 2002 C4s with the PSE but no switch. Do you think I'd be able to add the switch? - I guess it depends on the mufflers is there anyway to tell if they are of the type that can be silenced with the vacuum. I had an email conversation with Carnewal a while back who thought it wasn't possible to retro fit - though he sells a kit? Which puzzled me. Perhaps there is a part number on the mufflers which would give a definitive answer? FYI/ I find having the PSE on all the time quite tiresome - there are some days when I just want to get from A-B with no excitment. But with the PSE every drive is an event - its also bad for my gas milage as I find I probably / subconciously keep one gear lower than I should just to keep the volume up :wink: Migration info. Legacy thread was 128449

POST 9Original post

Yes I do have switchable cans! If you take a picture of your engine bay to the right of the throttle body I can tell you if you've got the PSE components (ie. vacuum actuator) installed. Question, does the car 'mute' itself in the 30-45mph range? If it does you've got all the bits in place just the missing the switch. The switch is actually a good few hours installation work and the kit Carnewal sells is missing a parts (ie. actuator bracket and Y piece). I've got all the instructions, the FAQ etc if anyone wants to do it. Damian Migration info. Legacy thread was 128620

POST 10Original post

I read somewhere that the PSE causes a sharp drop in fuel consumption and a stiff neck... from driving around with the windows open nailing it at every opportunity! Having had the PSE with the switch installed on mine I can certainly agree with the above! Best mod I ever had done on any car. It is actually very good having the switch as you can shut it up when you're not in the mood, early morning/late night stealth ops, or overtaking horses. You get rid of another blank switch on the dash too which is nice... As Damian says, make sure that the bit which shuts it up automatically between 30-50 is left unconnected. Migration info. Legacy thread was 128824

POST 11Original post

Going slightly off-piste. I have ordered factory fit PSE on me new 997. Is this switchable - whatever that means?!?! Migration info. Legacy thread was 128830

POST 12Original post

Agree totally with Robert. My MPG dropped by over 20% after I had the PSE fitted on my Targa. Well worth it though Migration info. Legacy thread was 128832

POST 13Original post

Yep - it will be jamie. You will know by the little switch on the centre consol. Migration info. Legacy thread was 128833

POST 14Original post

I've got the switchable PSE which sounds great, I'm just a bit confused about the automatic quiet 30-50mph bit - how do you disable this? Is it an (easy) re-wiring job? Migration info. Legacy thread was 129849

POST 15Original post

Tony - I think Indie's can do this. Otherwise I am pretty sure there is a DIY on Renntech somewhere. Migration info. Legacy thread was 129851

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