911uk

TopGear Valved Silencers question

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Use latching relay

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Suggestion
There's a few wiring diagrams to hook up a factory switch using a latching relay - but i see no reason why the standard wiring wont work.
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Use latching relay

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Suggestion
There's a few wiring diagrams to hook up a factory switch using a latching relay - but i see no reason why the standard wiring wont work.
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TopGear Valved Silencers question

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911uk: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

Has anyone fitted these to a 996.1 PSE equipped car and used the factory 'vacuum only' actuation rather than the manual switch controller provided and as per the 996.2? If so, how do they behave compared to PSE? Is it a gradual opening depending on throttle demand, ie. vacuum? When on steady motorway cruise, would they be open or closed and is there any drone in this condition? Thanks in advance.

POST 2Original post

they can be wired that that way, just depends on who can do that

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 2760720

I've read they can be hooked up to the original vacuum plumbing and are good to go and I'm keen to hear how this operates on the road compared to the PSE silencers and general sound levels.

POST 4Original post

The don't operate gradually on the vacuum solenoid, they are either open or closed. There's a few wiring diagrams to hook up a factory switch using a latching relay - but i see no reason why the standard wiring wont work. Doesn't the standard PSE wiring always start open though or something or is there some speed related actuation? i know there is something different.

POST 5 / ORIGINAL POSTEROriginal post

Quotes source post: 2760950

Thanks, that makes sense. Does anyone know at what speed or throttle condition the valves opened on the non-switchable 996.1?

POST 6 / ORIGINAL POSTEROriginal post

Just thought I'd add these two Porsche Technical Documents I found for both PSE.1 and PSE.2 systems which give full details on installation, parts, testing and protocols. Hopefully this is a useful resource for anyone searching for similar answers.

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