Exhaust flaps

4.2 V8 32v FSI - 444 bhp
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robster
1st Gear
Posts: 63
Joined: Sun Jan 06, 2019 9:24 pm

Exhaust flaps

Post by robster » Sun Mar 10, 2019 3:19 pm

Just driven in comfort mode for a while and pulled up. Noticed that the exhaust flaps are open.

Is the system more complicated than comfort closed, dynamic open?

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Thundercliffe81
3rd Gear
Posts: 260
Joined: Sat Sep 08, 2018 7:00 pm

Re: Exhaust flaps

Post by Thundercliffe81 » Sun Mar 10, 2019 7:34 pm

robster wrote:Just driven in comfort mode for a while and pulled up. Noticed that the exhaust flaps are open.

Is the system more complicated than comfort closed, dynamic open?
The flaps only open in comfort above 3200-500rpm. They might ask be a bit different. My Milltek irks just above 3000rpm. Only other time from dynamic they should be open is Individual if selected to dynamic engine sound.

They can get stuck though. Rust etc. Just need a bit of WD40.

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Rusty Racer
3rd Gear
Posts: 319
Joined: Thu Jun 13, 2019 8:45 pm

Re: Exhaust flaps

Post by Rusty Racer » Sat Jun 15, 2019 9:45 am

When I first got mine the RH box flap was so stiff if it did close it then got stuck shut. Audi warranty very kindly fitted a new one but it now makes me wonder if the LH is a bit tight.
Still working out all the details but exhaust note in comfort seems louder than auto? Am I going mad! OEM standard system
2018 RS4 B9 Carbon Edition
2014 RS4 B8

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