RS7 - Is it possible to improve turbo / blowoff sound?

[camkelly]

The RS7 has barely any blowoff valve sound and the turbos dont whine a very much even under load.

Is there any way to improve the sound of the turbos?

[LINDW4LL]

Yes, an open style intake will help improve the turbo sounds

https://www.uspmotorsports.com/USP-A...at-Shield.html

https://www.ecodetuning.com/srm-4-0-...let-pipes.html

[camkelly]

Yes, an open style intake will help improve the turbo sounds

https://www.uspmotorsports.com/USP-A...at-Shield.html

https://www.ecodetuning.com/srm-4-0-...let-pipes.html

Is there anything I can do to the blowoff valves?

[tabio42]

Is there anything I can do to the blowoff valves?

Vent them to atmosphere.


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[s4nicetry]

No blow-off valves on this car.

[MadMaxD]

Forge makes diverter valves that are available in recirculating (quiet) or vent to atmosphere (loud).

[[waZZup]]

Is there anything I can do to the blowoff valves?

Install them first)) Instead of OEM bypass. Not sure if you'll have to alter your ECU firmware.

[tabio42]

The air passing through the bypass valves isn’t metered. So you can vent to atmosphere if you want. Which btw would make them blowoff valves.


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[ntsantos]

The open air intake alone makes a pretty big difference in sound.

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[bhamcarnut]

Forge makes diverter valves that are available in recirculating (quiet) or vent to atmosphere (loud).

I have heard sound bites of these on an RS7 with a SRM intake. Before and after. Sounds cool as hell!!!! Much louder than with just he intake.


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[bhamcarnut]

No blow-off valves on this car.

???


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[MolonLabe300]

???


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They use diverter valves that recirculate the air so it's much quieter.

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[bhamcarnut]

Gotcha. Sorry. Was thinking they meant our cars don’t use valves of any type for blow offs. Lol. It’s bed time. Hahahaha


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[ericw.]

I have heard sound bites of these on an RS7 with a SRM intake. Before and after. Sounds cool as hell!!!! Much louder than with just he intake.


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I tried searching for this video and couldn't find it. Lol happen to know where you saw it on a 4.0t? I'm mostly just curious, don't think I'd put it on my car.

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[bhamcarnut]

One of the guys on the forum sent me a txt with it. Wish I still had it.


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[MolonLabe300]

Forge makes diverter valves that are available in recirculating (quiet) or vent to atmosphere (loud).

FYI they only list them for RS cars. Not sure what the difference with them would be.

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[bhamcarnut]

I have heard both ways. Forge wasn’t sure if they would fit an S model but RS and S use the same part number for the stock valves.


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[esquire1]

I installed the Forged Atmospheric Diverter Valves on my RS7. I will try to get you few videos later tonight. In the meantime, I can tell you the difference in sound is significant. When quickly dropping out of boost, the valves make an audible "whoosh" sound. Initially, I was hesitant to install them for fear that the car would sound like an Evo IX with an HKS blowoff valve installed. However, after installing them I can confirm that is not the case. While the sound is definitely noticeable -- both to you and other drivers on the road -- it is by no means obnoxious.

[V10Jon]

I installed the Forged Atmospheric Diverter Valves on my RS7. I will try to get you few videos later tonight. In the meantime, I can tell you the difference in sound is significant. When quickly dropping out of boost, the valves make an audible "whoosh" sound. Initially, I was hesitant to install them for fear that the car would sound like an Evo IX with an HKS blowoff valve installed. However, after installing them I can confirm that is not the case. While the sound is definitely noticeable -- both to you and other drivers on the road -- it is by no means obnoxious.

Interested to hear what they sound like. To my understanding, as long as your stock diverter valves are healthy, these won't add any performance gain besides the obvious BOV sound.

Can you share a picture of them installed? Curious if they change the engine bay look at all.

[camkelly]

Please send a video! Where in the engine bay are they installed? Is it involved or a DIY kind of thing?

[Mr. Anderson]

I installed the Forged Atmospheric Diverter Valves on my RS7. I will try to get you few videos later tonight. In the meantime, I can tell you the difference in sound is significant. When quickly dropping out of boost, the valves make an audible "whoosh" sound. Initially, I was hesitant to install them for fear that the car would sound like an Evo IX with an HKS blowoff valve installed. However, after installing them I can confirm that is not the case. While the sound is definitely noticeable -- both to you and other drivers on the road -- it is by no means obnoxious.

very interested. are you stock or do you have a tune? I got ahold of the installation instructions, seems pretty straight forward for the install, probably will take more time to tidy it up the harness and tubing.

[camkelly]

Where did you get the install instructions?

[widebodyfx]

The Forge part listing for the RS6 has instructions in the downloads section. https://www.forgemotorsport.co.uk/Au...uct--1454.html
https://www.forgemotorsport.co.uk/?download_id=155

[ericw.]

I installed the Forged Atmospheric Diverter Valves on my RS7. I will try to get you few videos later tonight. In the meantime, I can tell you the difference in sound is significant. When quickly dropping out of boost, the valves make an audible "whoosh" sound. Initially, I was hesitant to install them for fear that the car would sound like an Evo IX with an HKS blowoff valve installed. However, after installing them I can confirm that is not the case. While the sound is definitely noticeable -- both to you and other drivers on the road -- it is by no means obnoxious.

are we there yet?

[widebodyfx]

I have the atmospheric units on order, wouldn't be installed til later in the month. Hopefully someone beats me to the video/sound info.

[V10Jon]

awesome! yes please do a quick writeup with your thoughts :)

[VR4-S4]

You guys might want to read up on why venting to atmosphere is not a good idea.

[Dasquade]

You guys might want to read up on why venting to atmosphere is not a good idea.

From what i used to have read about it and remember...tought indeed recirculating valves are better....like stock.
*didn't it kept boost or pre boost better or something, also easier on the turbos and quick releasing the pressure?
Always in to learn something more :).

[Hofahome]

From what i used to have read about it and remember...tought indeed recirculating valves are better....like stock.
*didn't it kept boost or pre boost better or something, also easier on the turbos and quick releasing the pressure?
Always in to learn something more :).

I thought on this motor the recirc valves are used to provide better spoolup when getting on throttle.


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[VR4-S4]

Audi's (and most cars) are designed with close loop turbo systems. Venting the already metered air into the atmosphere can cause rich air/fuel mixtures, as well as some other issues. It does also help spool the turbos faster, which is why Audi switched from open to closed loop back in the Group B rally days.

[widebodyfx]

I get the metered part with MAFs, thought MAP systems didn't matter as much.

[[waZZup]]

Venting the already metered air into the atmosphere can cause rich air/fuel mixtures, as well as some other issues.

But it's not yet metered there ;)

[[waZZup]]

Blowoff valves are able to keep more boost than OEM bypass which is said to cause boost leak on some stage3 configs beyond OEM RS turbos. Some say they don't have such issues.

[VR4-S4]

But it's not yet metered there ;)

Ahhh, of course. Personally, I'd still stick to upgraded recirculating ones once the factory bypass valves start leaking, but to each their own.

[[waZZup]]

Ahhh, of course. Personally, I'd still stick to upgraded recirculating ones once the factory bypass valves start leaking, but to each their own.

As far as I know, there's only Autotech's blowoff solution currently in the market that can solve such problems.

[jsmonet]

I don't suppose these ever went on. My inner unsubtle riceboy is dying of curiosity

[widebodyfx]

Sadly no, sitting on my shelf of parts to install. Intending to put them on after the SRM intake which is another part I haven't put on yet either.

[V10Jon]

Sadly no, sitting on my shelf of parts to install. Intending to put them on after the SRM intake which is another part I haven't put on yet either.

my advice is install the intake then take a ride before the aftermarket diverters. The intake alone will drastically change the factory diverter sound.

[widebodyfx]

I dig it. Pondering the Eventuri like IowaRS7 has with short SRM tubes, I think I could just chop my SRM long tubes down but that seems like a waste and very expensive for the Eventuri.

[fmonteiro444]

I just installed the SRM intakes and it made a huge difference in sound. You can hear the turbos spool and you can hear the diverter valves now.


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