I have tried both the drilled hole (wak box) mod and full induction kit on my TTS and there is definatley a difference. The drilled method makes a small/ minimal difference. With the full induction kit and stage 1 map I can hear the wastegate flutter, dump valve release and induction suck.(couldn't hear the wastegate before map due to the lower boost pressure.) having said this though, the induction 'roar' on the tt is definatley no roar, more of a high pressure suck. On previous cars (3.0 SLK, 3.0 3 series, 3.2 TT, 2.0 3 series , 1.4Zr) when I fitted an induction kit the soun was a deep roar and a real cost effective way of getting a better sound!

 

I have tried both the drilled hole (wak box) mod and full induction kit on my TTS and there is definatley a difference. The drilled method makes a small/ minimal difference. With the full induction kit and stage 1 map I can hear the wastegate flutter, dump valve release and induction suck.(couldn't hear the wastegate before map due to the lower boost pressure.) having said this though, the induction 'roar' on the tt is definatley no roar, more of a high pressure suck. On previous cars (3.0 SLK, 3.0 3 series, 3.2 TT, 2.0 3 series , 1.4Zr) when I fitted an induction kit the soun was a deep roar and a real cost effective way of getting a better sound!

Thanks for the info! At least now I know I am never getting a satisfying engine/induction sound on this car... so I might as well invest on something that will give me more satisfaction for my money (like bigger brakes).

I will really miss the sound I had on the ST.. it was one of the best induction noises I'd ever heard (and I had the pleasure of driving that car to work everyday). Sure, it had the "sound symposer" setup (a bit like the sound piping on the V6 TT), but it was when you opened the air box that you got the real satisfying sound from the engine.

I wonder why the TT does not produce a good sound since it's the same basic engine configuration (2.0L turbo transversal setup). Maybe Audi are just too good at noise control and the intake is designed to muffle almost all the sound? :?

 

I had an st aswell with a dream science induction kit , amazing sound off that bit of kit.
Have got a p-flow installed in the tt a few weeks ago and makes a big difference to the sound, but as said its more of a sucking in the air sound than a roar , Good bit of flutter tho the same as i had on the st with the dream science kit.

 

I recently trial fitted the P Flo kit and couldn't stand the sucking noise, thought my car was having an asthma attack. It quickly got put back to my standard air box.

 

I had an st aswell with a dream science induction kit , amazing sound off that bit of kit.
Have got a p-flow installed in the tt a few weeks ago and makes a big difference to the sound, but as said its more of a sucking in the air sound than a roar , Good bit of flutter tho the same as i had on the st with the dream science kit.

I might still try something out then... but based on what I've learned so far, it will not be a priority on my list.

I recently trial fitted the P Flo kit and couldn't stand the sucking noise, thought my car was having an asthma attack. It quickly got put back to my standard air box.

:lol: Yeah, I admit it's not the best sound ever if it's not supported by a nice roar... :wink:

.

 

'drilled two 2.5"' (holes). Is that it mister? Wak it more fella- don't be afraid, you wont hurt it and, if it's too loud, cover some holes up with duct tape. I can hear mine breathing in, spooling up and letting go. As for cold air setups- waste of time.

 

'drilled two 2.5"' (holes). Is that it mister? Wak it more fella- don't be afraid, you wont hurt it and, if it's too loud, cover some holes up with duct tape. I can hear mine breathing in, spooling up and letting go. As for cold air setups- waste of time.

So you have actually managed to get more sound?! Okay, trying this as soon as tomorrow then! [gets his trusted Bosch drill ready] Thanks for the info!

 

'drilled two 2.5"' (holes). Is that it mister? Wak it more fella- don't be afraid, you wont hurt it and, if it's too loud, cover some holes up with duct tape. I can hear mine breathing in, spooling up and letting go. As for cold air setups- waste of time.

So have actually managed to get more sound?! Okay, trying this as soon as tomorrow then! [gets his trusted Bosch drill ready] Thanks for the info!

Plenty of threads on here about how to do a Wak Box, failing that his website. www.wak-tt.com

 

Well, I do need to thank you two, Adam and longodds! Deciding I had nothing much to loose, I went at it without reservation... the box ended-up looking somewhat like Swiss cheese. I then screwed the thing back on... and I must admit it now does make an audible difference! It looks like this car will never really have a sexy sound... but at least now it does have one. I have a rounder induction sound in WOT and can sometimes hear a faint blow-off sound. 8)

I will need to monitor how the paper filter is doing during the winter as it is now rather exposed. But my experience with the Focus ST tells me there won't be too much stuff going up to that location, even in extreme weather (which we can get our fair share of around here).

Well, all in all, that was 75$ well invested. I will always have an OEM, intact air box on the shelf if I want to go and sell the car later on... and for now, I've got a better sounding engine.

 

My pleasure, glad you went for it and pleased with the result

 

Starting reading this thread and thought we'd been taken over my max power :mrgreen:

 

My pleasure, glad you went for it and pleased with the result

Easy to decide... when you've got a spare part in the back in case you mess up.

Now, I may be dreaming this... but it feels like the car is a bit more willing at higher RPMs. It's incredible what your imagination can do, right? :lol:

 

Good thinking, it's unlikely you'll significantly notice any change in performance, the improvement in the noise will give you that impression.

 

My pleasure, glad you went for it and pleased with the result

Easy to decide... when you've got a spare part in the back in case you mess up.

Now, I may be dreaming this... but it feels like the car is a bit more willing at higher RPMs. It's incredible what your imagination can do, right? :lol:

Definatley the sound acting as a placebo. Might notice a slight difference if you had changed the filter, but as the standard filter is the biggest restriction in the standard intake system and you haven't changed this, the air is no more free flowing than before.

 

I had the backbox deleted of my last tt i actually loved the sound but the drone on motorways could get annoying at times. Anyone know if taking the resonator will be ok when it comes to drone

 

I had the backbox deleted of my last tt i actually loved the sound but the drone on motorways could get annoying at times. Anyone know if taking the resonator will be ok when it comes to drone

I took off the stock resonator and replace it with a custom one. Seems ok imo.

 

On my previous 2.0 TT I replaced the rear box for a custom twin box straight through set up. ..not loud by any means and no drone just a nice deep rumble. If you want anymore details let me know.

 

I actually think the exhaust sound is okay on my car... it's only the induction sound that I think is really lacking. And from what I've learned so far, this is not going to change with a simple filter change... :?

Oh well, I can always buy a used Focus RS in a couple of years.