996 PSE question

[Shaoxter]

I can't hear any difference with the button on or off, is there supposed to be a big difference?

I've checked the brown cable in the engine compartment and it's still connected.
Also just did the diode cut and now there's no nerfing from 25-40mph But the PSE button still doesn't seem to do anything...

[m040]

There is a big difference between silent and loud.

The default position of the valves on the exhausts (no vacuum applied) is open = loud.
Only when you apply vacuum, the valves are pulled shut.

A frequently failing part is the electro valve.
Or, they stay closed all the time = No vacuum = loud
But I have seen cases where the electro valvee stays open all the time= silent

Vacuum leaks or a leaking actuator are other options.

[m444ttb]

You can definitely notice a difference in the tone with your foot down. Not sure how I'd describe the change as I didn't think it was that much louder. Seems more like the depth of the noise changes.

[andrewturner]

On the quiet setting mine is 98db, on the loud setting is 108db (Goodwood's noise meters). You should be able to hear the difference!

[Shaoxter]

m444ttb said:

You can definitely notice a difference in the tone with your foot down. Not sure how I'd describe the change as I didn't think it was that much louder. Seems more like the depth of the noise changes.

Interesting, that's kind of what I'm hearing as well, a difference in noise rather than the actual loudness.

Maybe I need to listen to it from outside or test using a decibel meter!

[m444ttb]

I've only heard it on a test drive this week. All the others I've driven didn't have the PSE. Try with the windows down as a start.

[supermono]

But crucially does it go quicker in either mode??!!