S3 Exhaust installed on an A3. How to open the valves?

[mjc1337]

Hi all,

I just installed an OEM S3 exhaust onto my A3 and the valve flaps are closed right now. Does anyone know how to open up the valves? Is there a way to manually have the flaps open at all times?

Thanks!

[2015S3]

Pull the motors off, tack weld the flaps to open position


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[Spinnetti]

Just remove them? on the S3, you start it up, then immediately unplug them and they stay open. Its obnoxious open all the time though. I put mine back to stock operation

[chillybone]

He wont have the wiring to do that trick. Unless I am mistaken? Are they wired up like factory?

[mjc1337]

Nope, you're right. The A3 does not have wiring that connects to the valve, like the S3. Any way to do this with a minimal amount of effort? (i.e., no welding and maybe just applying some kind of signal to actuate the flaps?)

[Spinnetti]

can't you just push them open? the motors should stay put yah?

[texasboy21]

Is there a definitive answer on what conditions the valves open on the S3?

[chillybone]

Honestly I think cold Start they are open. And then they open and close while you drive around. They open at 3,000 rpms. I think.... I was monitoring them with vagcom when I did the conversion. And that seemed like that was the case. Anyone else have any more technical information?


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