Looking at the German Audi forum, there's may be more to it than just a simple delete.

To quote one of the comments - "I would not do that.The membrane also serves as a gas seal from one side to the other. There are two hoses connected to it, in one of which there would also have to be a component so that the noise generation works."

https://www.tts-freunde.de/forum/index. ... generator/

 

TT-S don't have this, do the standard output FSIs all have this? That seems odd. All you have to do here is change part# 17 (the diverter housing) to the part from a TT-S (or any other FSI which doesn't have the stupid noise generator). Then you can pull all that crap out--38,39, 40-47, and throw them in the garbage lol.

Or just throw out all the above pieces and cap off at #39, instead of buying the #17 that doesn't have that additional side outlet.

Either way should work. Doesn't look like there's any electronics involved in #46 so should not cause any issues at all.

 

I have to say this is actually a pretty interesting design. I was unaware a mechanical noise generator even existed. I went through the Workshop Manuals and couldn't find these parts listed, so it would be interesting to know which models have it.

As TT'sRevenge stated, with the noise generator assembly removed, it should be possible to remove Hose [38] and simply connect Hose [47] directly to the Diverter Valve Flange [17] at Hose Clamp [39] thereby bypassing the entire sound generator assembly.

Do you know where the other end of hose [47] connects to?

 

Found this -

"Very easy to do, just remove the pipe from the right side of the DV flange, remove airbox, remove the 2 nuts holding the noise generator to the bracket, and remove the 2 screws holding the noise pipe to the firewall. I used a rubber pipe endcap to clamp the hole in the DV flange temporarily but will be ordering the correct part from Audi (06F145751B)."

https://www.vwvortex.com/threads/did-th ... s.5244852/

 

I'm trying to reduce some weight from the front and this seems like an easy win. Don't care about the sound much, the car is to be fast not loud.

You need to lose a lot of weight before it becomes worthwhile. A couple of pounds isn't worth the effort.
There are better ways to spend your time and money.
See: http://www.tuneruniversity.com/blog/2012/03/power-to-weight-ratio/

 

OK just to clarify, I have a TTS and it has it. Maybe later years don't have it or so I heard.
I don't want to spend any money on this mod, so probably will try connecting 47 to 17 as this pipe looks like a dead end.

Sure there are other ways to reduce weight and improve handling and I'm looking at them but in terms of value for money this one looks like a low hanging fruit 8)

 

@ nigh7swimming - Does the other end of [47] vent to atmosphere?

If so it would seem you could remove everything and just cap off the DV at [39].

Please let us know how this works out, and if you're up for it, can you provide us with a little DIY for other's who may want to try this too? It would be a nice addition to the Knowledge Base since we already have a similar DIY for the electronic Soundactor -

How to: Audi TT Mk2 (8J) Soundactor Reprogramming
https://www.ttforum.co.uk/forum/viewtop ... &t=2010681

 

OK so here are my final findings.
I blocked the DV outlet which goes to the noise generator pipe with a special rubber cap (ebay) using the OE clamp.

Then removed the resonating chamber and the pipe held by two notorious screws.
Weight saving: 1kg
Time: 1h (should you have the right tools 15 minutes).

Effects:
* I see no change in performance. I'm on Rev G DV and my throttle response is immediate.
* In terms of sound, I see no difference in city driving but I noticed the car is overall quieter on motorday driving.
* I now have more space in the engine bay which should improve cooling a little bit. Also makes it easier to change the DSG filter and air filter.

Analysis:
As far as I can tell by disassembling the device it's purely an accoustic chamber. The middle section doesn't seem to let the air thougfh but the vibrations. The end section is not a dead end, it's connected to underneath the cover by the wipers where there seems to be another chamber in the chasis itself. I simply blanked that with a tape. All the pipes were 100% clean so it seems there is no direct flow of air from the intercooler here as otherwise I'd see some oil deposit or dust.
Overall, I believe it's a worthwhile mod.

 

It's a pointless piece of plastic
Good job you have removed it
Took mine off my TTS when I first got it, near on 5 years ago. there is no issue without it.
99% of the KO4 TFSI engines do not run one

 

I did mine over the weekend

Like nigh7swimming just removed the pipe
Put tape over cabin hole and fitted a cap over DV outlet

can definitely hear the induction intake noise on acceleration now a lot more even though I’m running a stock factory box