TTRS Exhaust Module-to control factory sport exhaust

[GaBoYnFla]

I remember seeing a module that would control the stock sport exhaust valves but can't find it in a search. I remember it being expensive at approx 400 but I don't want to change the exhaust just want it a tad louder or to not have to punch the button every time I get in the car.

Anyone have a link to it and videos of it?

[timzcat]

Here's one thread with the module info, there is another in that forum also.
http://www.audizine.com/forum/showth...st-valve-issue

[Izzu]

I'm in the habit of hitting the drive select button on the wheel every time I start-up the car, because besides the exhaust, other dynamic features such as the engine mode (D vs S) reset to "auto" every time you start-up. There's also speculation/lack of information surrounding whether other dynamic features, such as the quattro/differential setting, reset to auto as well. Thus, since I would already have to press the exhaust button and shift the car into S anyway (I drive in manual sport mode mostly), I feel more comfortable and more efficient just hitting the drive select button, which will put everything back to the setting I shut the car off in. In fact, I don't even really think about it anymore; hitting the drive select button when I start-up is almost as automatic as me putting my seat belt on.

My point is if I had the option to ensure the exhaust was always set to sport, it still wouldn't change me having to press another button, as other features of the car are still starting in auto mode. My 2 cents.

[timzcat]

I don't get this comment. Whatever drive mode I shut off in is what I start up in. (Of course that is Individual, maybe that matters).
The D to S will never change and I wish it could be set permanenty.

[ormandj]

I don't get this comment. Whatever drive mode I shut off in is what I start up in. (Of course that is Individual, maybe that matters).
The D to S will never change and I wish it could be set permanenty.

That's not how my TTRS works. Even if you shut off in dynamic, when you start the car it may say dynamic, but the transmission is definitely not in sport mode and the flaps are definitely closed. I have to use drive select to re-select the mode to get everything setup properly.

[GaBoYnFla]

I wonder if the suspension is separate from all this because I keep mine in Dynamic all the time and it's firm all the time. I have to press the exhaust button each time I start it up.

[Rapture]

There is a module sold in Germany I believe that gives you a lot more control over these settings. I saw it a while back on the AW forum. Search on Exhaust control module there and you should see what I am talking about. It should save settings so that at start up they remain as they were when the car is turned off.


Rapture

[timzcat]

That's not how my TTRS works. Even if you shut off in dynamic, when you start the car it may say dynamic, but the transmission is definitely not in sport mode and the flaps are definitely closed. I have to use drive select to re-select the mode to get everything setup properly.

In individual I have everything in dynamic except for suspension. I only ever drive in Sport for transmission but know of no way to have it be in Sport unless I pull back on shifter. You realize what you wrote that when you start the trans is not in Sport mode, well its in Park? lol
My experience with the exhaust valves is as follows. They are always open if I am in sport but if you put it in Neutral or park they will close but return to open when back in drive (well S)
I never have to touch my exhaust button. I just start it and pull back for sport once in drive and I am good. Individual settings with valves open. When ever I think the valves may be closed I hit the button but end up putting them in to standard. I know for sure that regardless of drive select it will close valves if you put it in neutral or park, maybe not immediately but it will

[Chuckster]

Drive mode stays the same, but when you start the car, it’s defaults to normal mode. I got to flip it to Sport mode every time.

[Izzu]

Whatever drive mode I shut off in is what I start up in.

I only ever drive in Sport for transmission but know of no way to have it be in Sport unless I pull back on shifter.

Just contradicted yourself. According to you, car starts up in dynamic (sport), but you have to pull it back for dynamic (sport). Car didn't start up in dynamic (sport) then. The screen may say you're in dynamic, but you're not.

It's not really up for debate. It's been proven time and time again across multiple models across multiple model years that this is how Audi designs their vehicles. Some speculate Audi does it for fuel economy reasons. If you were the average Joe driver who shifted from P to D every day and refused to give 2 shits about the systems and options available to you, you could find yourself not meeting Audi's claimed MPG because you somehow accidentally put yourself in dynamic mode and are now driving in sport 24/7. Multiple owners have found no matter the class (RS, S, A/Q), Audi will reset the engine and exhaust to auto mode upon turning off the vehicle, no matter what mode you were in. You have to either re-select the mode upon start-up or shift manually into "S" again to put it back to how you left it.

My initial comment was that if you have to do that anyway to put the engine back into sport mode (and potentially other systems such as quattro/differential), it would be somewhat of a waste to drop $400 on a module that does absolutely nothing to change your start-up routine.

You realize what you wrote that when you start the trans is not in Sport mode, well its in Park? lol

Clearly. The point is, if the vehicle is properly in dynamic, when you shift from P to D, it will be in sport mode (not "D" mode). However, when you start-up the vehicle in dynamic, when you shift to P to D, it will be in auto mode ("D" mode). You have to pull the shifter again to get it in sport mode. That means the car is not actually in dynamic mode. See my point above. Audi did this specifically so you would have to take an extra step to confirm you want it in dynamic mode again, despite you ending your last trip in dynamic mode.

Give it a try. When already in "S" mode, shift to "P". Then shift back to drive, and you'll see you're back in "S" with no extra shifting needed. That's the engine in proper dynamic mode. That doesn't happen when you start-up the car and shift for the first time.

I never have to touch my exhaust button. I just start it and pull back for sport once in drive and I am good.

Correct. Thus there are three ways Audi gives you to put the exhaust in dynamic mode after starting up the vehicle. 1) Click the exhaust button 2) Re-select dynamic (or individual if set properly) mode 3) Shift the transmission into "S"

All three methods will put the exhaust in dynamic mode, however, not all three methods do the same thing. Method #1 only puts the exhaust in (or out of) dynamic mode. Method #2 puts everything (steering, suspension, quattro, engine, exhaust) in dynamic mode. Method #3 puts the engine and exhaust in dynamic mode. All three get the exhaust to dynamic mode, but all three give you different results for other parts of the vehicle.

The point is all three methods are ways to put your exhaust in dynamic mode, but no matter what, both exhaust and engine will start in auto mode when you start the vehicle up.


Hope I was able to relieve the confusion you experienced.

[timzcat]

I am not confused, I guess I don't get why it's such a big deal to be in dynamic mode if you just started the car, you're not moving so engine, transmission, suspension don't really do much. But once you put it in D and pull back you are automatically in your preferred setting. It's simply the difference between push a button or pull a lever, except my hand is already on the shifter.

Annoying? I guesss but I agree with the gas mileage point. It also may just be intentional for cold start reasons. Now I am curious if the R8 is the same way.

[Izzu]

I am not confused, I guess I don't get why it's such a big deal to be in dynamic mode if you just started the car, you're not moving so engine, transmission, suspension don't really do much. But once you put it in D and pull back you are automatically in your preferred setting. It's simply the difference between push a button or pull a lever, except my hand is already on the shifter.

Annoying? I guesss but I agree with the gas mileage point. It also may just be intentional for cold start reasons. Now I am curious if the R8 is the same way.

Yeah that’s what I’m saying to the OP. What’s the point of a $400 module to automatically put the exhaust in sport mode when you’re already pulling back the shifter anyway?


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[GaBoYnFla]

Yeah that’s what I’m saying to the OP. What’s the point of a $400 module to automatically put the exhaust in sport mode when you’re already pulling back the shifter anyway?


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I put my car into Manual mode 100% and never use sport except a couple of launch control tries. I learned quite a bit about how the car operates and yesterday, started clicking the dynamic mode after I start it. But I wish it would just stay in Dynamic.

[Izzu]

I put my car into Manual mode 100% and never use sport except a couple of launch control tries. I learned quite a bit about how the car operates and yesterday, started clicking the dynamic mode after I start it. But I wish it would just stay in Dynamic.

Yes, but I’m assuming you want it in sport manual, not D or auto manual, yes?

There is a difference between sliding over to manual from sport vs auto/D. I drive in manual most of the time too, but I still have to reset the system to dynamic or shift into S before sliding over to manual in order to get sport manual mode. Sucks that Audi won’t default it to that on start-up, yes, but since you’re already doing that in the first place, and that action itself puts your exhaust in sport too, wouldn’t it be a waste to buy the module?


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[WAF]

Yeah that’s what I’m saying to the OP. What’s the point of a $400 module to automatically put the exhaust in sport mode when you’re already pulling back the shifter anyway?


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The point of this module is that in dynamic both flaps aren't opened 100%. Left tip only opens 100% @3800rpm. This module actually lets you open and close 100%, and the last start mode works as stated if your flaps are open they stay open until changed via button. OEM doesn't act like this as you constantly have to go into MMI and reselect. Either way your flaps will not be open 100% of the time with OEM settings. Theres a big difference in sound. There's alot of info on this covered in detail in the RS3 section might be a good idea to look at some threads there.

[Izzu]

The point of this module is that in dynamic both flaps aren't opened 100%. Left tip only opens 100% @3800rpm. This module actually lets you open and close 100%, and the last start mode works as stated if your flaps are open they stay open until changed via button. OEM doesn't act like this as you constantly have to go into MMI and reselect. Either way your flaps will not be open 100% of the time with OEM settings. Theres a big difference in sound. There's alot of info on this covered in detail in the RS3 section might be a good idea to look at some threads there.

Ah, ok. Thanks for the info!

[WAF]

Ah, ok. Thanks for the info!

Glad to help ive had this unit on for a lil bit and its a great option for those that want a lil more exhaust sound but don't want to spend 5k on a catback section. Also a great option of this controller let's you go back to stock settings on the fly or you can disable it in a service mode which deactivates the button on the dash if you choose that option and can be reactivated by holding the button done for 10 seconds. When switching between oem setting "dynamic" then switching to full open the difference is night and day. The car gets alot more attention though. Also Michael the owner of ASR is great to deal with.

[timzcat]

I played around with this today. If you unplug the modules so they are open 100% the drone at idle in S is just annoying and that was on a short drive.
Overall the car sounds better with ne closing to reduce the drone then having them open all the time. The volume level overall is not that different while driving.
The cat delete is the best bang for the buck to make the car louder but not drone. 2nd to that I'd be curious what removing the resonators would sound like. With the valve able to close I wonder if it would avoid drone but make it louder.

[GaBoYnFla]

Sorry, I won't remove the cat.....my contribution to you people who have children and the environment they will have to live in after I'm gone.

[timzcat]

Yeah because all the car's pollution from other markets (without secondary cats) doesn't end up in the same atmosphere.

[GaBoYnFla]

Yeah because all the car's pollution from other markets (without secondary cats) doesn't end up in the same atmosphere.

Just doing my little part for your kids. (Really guilt from driving a car that gets about 17 mpg and is a little car!)

[timzcat]

NO kids for me. haha

Before you commit to the expense just unplug them and see if you like it. I know you don't want to hit the button and really the better module si avc which works with drive select directly. It is however $550

[GaBoYnFla]

NO kids for me. haha

Before you commit to the expense just unplug them and see if you like it. I know you don't want to hit the button and really the better module si avc which works with drive select directly. It is however $550

Since creating this thread, I've just been cycling the "drive select" back around to Dynamic....pain in the butt but it does make a difference.

[WAF]

NO kids for me. haha

Before you commit to the expense just unplug them and see if you like it. I know you don't want to hit the button and really the better module si avc which works with drive select directly. It is however $550

Unplugged valves will not sound the same compared to if you have the controller also when unplugged your sending soft codes. These soft codes "safety limits as system is unsure of status on said valves it adjusts fuelling etc. Thus giving you a power loss read the links above this gets covered in that thread. There is some drone in S modes when ideling but goes away the second you blip the throttle then it's out of the drone rpm range. In D with flaps open it sounds great.

Also for those who are worried about the secondary cats being removed this is how the car is sold in other parts of the world. Reason for having the cats are because of strict laws like in California from what i've heard.

We have the great pleasure of paying a carbon tax up here , so there's my contribution that comes out of my wallet every day.

[timzcat]

I am aware of all this, wanted to see the sound difference. I was only. It's not that big of a difference and the drone is annoying.
Let's keep in mind your in the TT RS forum so we are not subject to the constant control over the valves like the RS 3.
Having the button we get more control over the valves then the RS3 does. After testing it I will say it is a little louder but it also negatively affects the sound at other RPM points.
This is not my DD and I have no problem with loud but all around the car sounds better with the valves in operation. To me, they logically closed one valve to prevent drone conditions so they actually put thought into it to get a quality exhaust sound.
I'll be interested to hear a quality aftermarket exhaust such as AWE but would be hard-pressed to think it will be worth the money given the stock is pretty damn good. You know the AWE is going to be at least 2K.

[WAF]

I am aware of all this, wanted to see the sound difference. I was only. It's not that big of a difference and the drone is annoying.
Let's keep in mind your in the TT RS forum so we are not subject to the constant control over the valves like the RS 3.
Having the button we get more control over the valves then the RS3 does. After testing it I will say it is a little louder but it also negatively affects the sound at other RPM points.
This is not my DD and I have no problem with loud but all around the car sounds better with the valves in operation. To me, they logically closed one valve to prevent drone conditions so they actually put thought into it to get a quality exhaust sound.
I'll be interested to hear a quality aftermarket exhaust such as AWE but would be hard-pressed to think it will be worth the money given the stock is pretty damn good. You know the AWE is going to be at least 2K.

Just trying to help out, i'll keep that in mind and go back to the RS3 forum seems like you have it all sorted out.

[Rapture]

Let's keep in mind your in the TT RS forum so we are not subject to the constant control over the valves like the RS 3.
Having the button we get more control over the valves then the RS3.

What does the above mean? Is there a difference between the RS3 and TT RS as it relates to how the valved exhaust works?



Rapture

[WAF]

What does the above mean? Is there a difference between the RS3 and TT RS as it relates to how the valves exhaust works?



Rapture

Wasn't sure what he was getting at also, maybe he will explain what hes getting at.

[twin_turbo]

I tried to unplug mine the other day. Just couldn't quite get my hands in there. Had my 2012 TT RS exhaust valves open 24/7 first week I got the car but the air hose was much easier to access. I guess I will have to drop the rear muffler by disconnecting the rubber hangers. Those that are unplugged, how did you waterproof the connectors?

[timzcat]

I tried to unplug mine the other day. Just couldn't quite get my hands in there. Had my 2012 TT RS exhaust valves open 24/7 first week I got the car but the air hose was much easier to access. I guess I will have to drop the rear muffler by disconnecting the rubber hangers. Those that are unplugged, how did you waterproof the connectors?

You can unplug them. It's easiest with a mirror and something like a right angle pick to pull the lock back and then it unplugs easily. Driver's side was a pita so do passenger side first so you get the idea.
I only did it temporarily so wasn't concerned. If one were to want to permanently disconnect them then the solution is to remove the mounting screws and space the valve away sois not actually moving the flap.
That is just a theory I had on options(that are free). I'd have to dig into it to see the feasibility.

[timzcat]

What does the above mean? Is there a difference between the RS3 and TT RS as it relates to how the valves exhaust works?



Rapture

My point was the lack of a button leaves all control up to the ECU. Based on all the conversations I've read on the subject, the RS 3 is somewhat overactive with valve opening and closing and it's really evident to people who have noisy valves because they can hear it everytime they move. With the TT RS the button appears to completely open one valve all the time and the other opens at 3.8k when the valves change over. Exhaust note still changes at 3.8k but is significantly less because the exhaust valves are open.

If I had a go pro or two I'd film the valves to pin down the positioning through different scenarios.

[timzcat]

Oh and second to that point, in D I don't know what the RS 3 does but there is no button to say "I want noise" on demand.
What I am getting at is for the RS 3 it probably makes a lot of sense to have this module if you don't want to drop say 4-5X that to get a louder exhaust.
For the TT RS I am not so sure because you have some more control in D to have "sport" exhaust in comfort for example.

[WAF]

You can unplug them. It's easiest with a mirror and something like a right angle pick to pull the lock back and then it unplugs easily. Driver's side was a pita so do passenger side first so you get the idea.
I only did it temporarily so wasn't concerned. If one were to want to permanently disconnect them then the solution is to remove the mounting screws and space the valve away sois not actually moving the flap.
That is just a theory I had on options(that are free). I'd have to dig into it to see the feasibility.

Issue will be with power loss. Free yes. Also weatherproofing will be an issue.

My point was the lack of a button leaves all control up to the ECU. Based on all the conversations I've read on the subject, the RS 3 is somewhat overactive with valve opening and closing and it's really evident to people who have noisy valves because they can hear it everytime they move. With the TT RS the button appears to completely open one valve all the time and the other opens at 3.8k when the valves change over. Exhaust note still changes at 3.8k but is significantly less because the exhaust valves are open.

If I had a go pro or two I'd film the valves to pin down the positioning through different scenarios.

I dont believe the issue with faulty valves has anything to deal with an overactive valve. Can you describe what makes or how theyre an overactive valve? The TTRS valves operate the same as RS3 for one open and one half until 3800rpm. This is the same as if you have your individual setting auto or comfort trans and exhaust dynamic. Selecting this you can use a stalk button on steering wheel to select drive mode in the RS3 with out going into MMI. But correct there is no stand alone button for exhaust valves.

Oh and second to that point, in D I don't know what the RS 3 does but there is no button to say "I want noise" on demand.
What I am getting at is for the RS 3 it probably makes a lot of sense to have this module if you don't want to drop say 4-5X that to get a louder exhaust.
For the TT RS I am not so sure because you have some more control in D to have "sport" exhaust in comfort for example.

I understand what your getting at now TTRS more control OEM setup. Benefits will still be a more aggressive exhaust note and last start mode from what im gathering now since learning about the exhaust button on the TTRS. Still might be an option for people who don't want to spend 4-5K and have a more aggressive note. Keep in mind you can disable the module and go back to a quieter OEM set up, which will not be possible with an aftermarket exhaust. Also the service mode so you wont be called on an aftermarket exhaust by dealerships. All to their own figure id throw some other benefits to it here.

[ormandj]

I think he may be referring to the valves opening and closing even in "open" mode, which _does_ happen in the TT RS. I have squeaky valves and I hear it every time I let off the gas then get back on the gas. This isn't any different than the RS3. The button doesn't make that stop.

[WAF]

I think he may be referring to the valves opening and closing even in "open" mode, which _does_ happen in the TT RS. I have squeaky valves and I hear it every time I let off the gas then get back on the gas. This isn't any different than the RS3. The button doesn't make that stop.

Ah ok, personally i've never experienced this with the RS3 perhaps others have mentioned it and i haven't heard of the issue before. Thanks for clearing that up, I wasn't sure on what he was referring to the function of open and closing sound of valves. Yah i could see how it would be annoying with daily driving everytime hearing that.

[twin_turbo]

I remember seeing a module that would control the stock sport exhaust valves but can't find it in a search. I remember it being expensive at approx 400 but I don't want to change the exhaust just want it a tad louder or to not have to punch the button every time I get in the car.

Anyone have a link to it and videos of it?

Hey GaBoYnFla, did you purchase an exhaust module? I am trying to decide between something like that or an aftermarket exhaust.

[GaBoYnFla]

Hey GaBoYnFla, did you purchase an exhaust module? I am trying to decide between something like that or an aftermarket exhaust.

No, I'm hitting the select button 5 times every time I get in the car....so it's in Dynamic....aggravating that it doesn't stay in the mode you park it in. I can say it makes a difference. How about you?

[twin_turbo]

No, I'm hitting the select button 5 times every time I get in the car....so it's in Dynamic....aggravating that it doesn't stay in the mode you park it in. I can say it makes a difference. How about you?

I have individual mode configured with everything in dynamic except for suspension and I pull back on shifter to enable sport mode for tranny which opens exhaust flaps. I unplugged the vacuum lines (golf tee mod) on my 2012 TT RS so the flaps were open 100% of the time. Sounded awesome. Would like to do that again but more difficult on this car and I worry about water shorting out something since they are electrically controlled.

[Thumper3]

I have individual mode configured with everything in dynamic except for suspension and I pull back on shifter to enable sport mode for tranny which opens exhaust flaps. I unplugged the vacuum lines (golf tee mod) on my 2012 TT RS so the flaps were open 100% of the time. Sounded awesome. Would like to do that again but more difficult on this car and I worry about water shorting out something since they are electrically controlled.

I'm guessing no one has dived into VCDS yet to see if there is a tweak for the setting since they are so new? I could swear I remembered reading about a tweak for the S3 to leave the flaps open, should be one here as well I would think.


As for spending $400 to avoid hitting a button (I also immediately pull back the shifter into S and then into manual and that's the only way I drive) that seems a bit excessive.

[twin_turbo]

I'm guessing no one has dived into VCDS yet to see if there is a tweak for the setting since they are so new? I could swear I remembered reading about a tweak for the S3 to leave the flaps open, should be one here as well I would think.


As for spending $400 to avoid hitting a button (I also immediately pull back the shifter into S and then into manual and that's the only way I drive) that seems a bit excessive.

It's not about hitting the button. You get more exhaust sound throughout the whole rev range as the flaps are constantly opening and closing depending on rpm/throttle input etc.