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Discussion summary
YOUR RESEARCHPSE quiet from 28mph - 44mph?
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Install pse i simply did not connect the speedo wire
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When I installed my PSE I simply did not connect the speedo wire.
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Suggestion
I wanted the ability to switch on and off the PSE (remember that the default postion is the louder setting).
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Suggestion · Original poster
I don't want to pull the vacuum line from the flapper and plug it, as I want to be able to use the button on the dash, in case I want to quiet it down when I have a passenger in the car.
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Is there a way to stop the flapper from closing during this MPH spread? I assume it's so that it's quiet when you are going through neighborhoods, but I don't like it.
I don't want to pull the vacuum line from the flapper and plug it, as I want to be able to use the button on the dash, in case I want to quiet it down when I have a passenger in the car.
Is there any way to do this?
Thanks,
- Anthony
Where is the relay for this? And if I remove the speed sensor wire, the button on the dash will still work, right?
I assume this would throw a code as well?
I snipped the little diode wire inside the box. Button still works. No code or lights or anything. It just works. Great mod, definitely would never ever ever need to reverse this IMHO.
When I installed my PSE I simply did not connect the speedo wire. Disconnecting the wire is easier and easily reversable, rather than altering the relay.
Previous owner did this hack prior to my arrival. I see no reason to ever reverse it. It's only there because of noise restriction laws in somewhere like Sweden or Denmark.
Ok, I just registered on Renntech and cutting the diode seems rather easy, and I don't see why I'd ever want to reverse this. Getting to the back of the relay board to remove the speed sensor wire may be a bit more tricky, however.
I wonder how much a new relay costs if I ever decide to replace this. Probably $100 or so...
Tim, yeah, I know why there is a cutout, but I don't get why you would install the entire system, then undo a portion of it. Just leave it unhooked during the install or install the mufflers by themselves without all of the other setup.
Whatever. Not my car, setup, or install.
the electronics by themselves is $400.... it is more than just a relay. I installed a switch between the speed signal. So you can reverse the mod with a flick of a switch.... never say never. Maybe some swedish guy might want to buy your car.
But, no big deal... if you want to snip the diode, that works too.
There is a wire that goes from a connector on the speedo cluster to the relay. It sends a speed signal to the relay which will close the valve (quieter exhaust) between 25 and 48. Apparently this is to comply with European sound regulations. I wanted the ability to switch on and off the PSE (remember that the default postion is the louder setting). You could also put a switch on the wire so that you could have the option of the system going quieter at the medium sppeds, but I did not want this.
I did this the easy way - I pulled the relay. Problem solved and took only 5 seconds.
Yes, the "quiet" button on the dash won't work anymore, but who would use that anyway? The PSE sounds perfect and doesn't need to be muffled. There is no drone.
- Anthony
You're on the right track with the relay.
History. Porsche, in order to comply with Switzerland's engine exhaust laws, restricts the PSE dB between those speeds. America has the least restrictive noise pollution laws.
