Tweaking the stock exhaust for a little more sound....
#11
#12
Audiworld Junior Member
The only feedback to the ECU from the exhaust system comes from the exhaust gas temp sensor (usually in the exhaust manifold) and the oxygen sensors before and after the primary catalytic convertors. This is why you can use almost any cat-back exhaust without issue. Both the Milltek and AWE exhausts, for instance, have no flap mechansim whatsoever.
If I am wrong, please feel free to correct me.
#13
#15
I really didn't think the stock exhaust made any sound but just rushing air on my car. All of the sound is artificial inside of the car - and it did sound quite good too! I say did because since I went with the AWE exhaust, I only hear the healthy exhaust growl when I want to, and total silence when I want to. It's really that good, and I'm very particular with aspects of my cars.
As mentioned, there are no electronic flaps in the AWE system. An X pipe is as old as dirt as far as performance exhausts go. It provides a crossover of gasses for better flow and scavenging in a dual exhaust system.
As mentioned, there are no electronic flaps in the AWE system. An X pipe is as old as dirt as far as performance exhausts go. It provides a crossover of gasses for better flow and scavenging in a dual exhaust system.
#16
AudiWorld Super User
Thread Starter
I really didn't think the stock exhaust made any sound but just rushing air on my car. All of the sound is artificial inside of the car - and it did sound quite good too! I say did because since I went with the AWE exhaust, I only hear the healthy exhaust growl when I want to, and total silence when I want to. It's really that good, and I'm very particular with aspects of my cars.
As mentioned, there are no electronic flaps in the AWE system. An X pipe is as old as dirt as far as performance exhausts go. It provides a crossover of gasses for better flow and scavenging in a dual exhaust system.
As mentioned, there are no electronic flaps in the AWE system. An X pipe is as old as dirt as far as performance exhausts go. It provides a crossover of gasses for better flow and scavenging in a dual exhaust system.
Last edited by Vijay; 01-19-2014 at 08:18 AM.
#17
AudiWorld Super User
The sound I like is when the windows are rolled down halfway. At this position the interior sound cancellation is switched off and you get to hear the deep tone of the exhaust. I agree that with the windows up most of the exhaust sound is absent.
Here's info on what ///M Traitor is referring to:
Here's info on what ///M Traitor is referring to:
#18
I'm almost 100% the S6 does not have that. It has active noise canceling when it's in 4 cylinder mode which is what the exhaust flaps are for. There is no artificial engine sounds however.
#19
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I'm also interested in a little more growl. A friend has the Merc E63 AMG wagon and that has a nice full sound. When he looked at my car he said "fire it up" to hear the exhaust but there was nothing, LOL. I like the tone inside when hitting the gas but I'm not sure if that's enhances or not.
#20
AudiWorld Super User
I copied this from the 4.0T study guide and I had found the part in ETKA in the past, so I'm pretty sure it's there. It doesn't get piped in through the audio system though so maybe it's more subtle.