View Full Version : Removing the noise-adder from GTI
You install this Audi A3 pipe which deletes the 3rd leg. The 3rd leg is what goes to the firewall to a noise chamber.
http://74.220.202.31/~bellbott/images/boostpipe1.jpg
but i like my 3rd leg ;-)
alf
1K0 145 770 K $33.65
Cooling - Intercooler - Air pipe
Air pipe - 2.0 liter 2006
www.1stvwparts.com
Dubdr
03-25-2006, 02:53 AM
Show some pics if you could, thank you.
oh im not doing this on my own car yet. i havnt decided if i like the sound.
but heres a pic of the 3rd pipe the GTI has:
http://74.220.202.31/~bellbott/images/boostpipe2.jpg
You install this Audi A3 pipe which deletes the 3rd leg. The 3rd leg is what goes to the firewall to a noise chamber.
http://sicily.globat.com/~bellbottomblasters.com/images/boostpipe1.jpg
Cool.
I read about that and it was featured in the GTI booklet/DVD. It talked about sound being pumped in to the cabin and I wondered what they did.
So, do you just plug the pipe at the engine location?
Or, are you saying that the GTI pipe has "3 legs" with one going to the firewall, and by using this pipe you keep it's function but no engine sound is pumped to the cabin?
If it's the later then why not just plug the "leg" going to the firewall or plug up the hole at the firewall? Even if you use the new pipe, what do you do with the hole in the firewall?
I think this is something I would be very interested in. I don't like the fake methods of inducing noise/sound to the cabin. Plus, I'm into audio so removing noise or lowering ambient sound level is a good thing. Thanks for the info.
T
oh im not doing this on my own car yet. i havnt decided if i like the sound.
but heres a pic of the 3rd pipe the GTI has:
http://sicily.globat.com/~bellbottomblasters.com/images/boostpipe2.jpg
Does it sit there open like that?
T
Does it sit there open like that? T
No, I pulled the hose off so we could look in.
So, do you just plug the pipe at the engine location?
Or, are you saying that the GTI pipe has "3 legs" with one going to the firewall, and by using this pipe you keep it's function but no engine sound is pumped to the cabin?
If it's the later then why not just plug the "leg" going to the firewall or plug up the hole at the firewall? Even if you use the new pipe, what do you do with the hole in the firewall?
I think this is something I would be very interested in. I don't like the fake methods of inducing noise/sound to the cabin. Plus, I'm into audio so removing noise or lowering ambient sound level is a good thing. Thanks for the info.
T
The GTI pipe has 3 legs, all of which are under boost pressure. The A3 pipe doesnt have a 3rd leg, so its just a regular 2 ended boost pipe. Its better to not plug it at the firewall, as one reason to remove it is to have less pipes to fill with boost. Theoretically, higher boost, though not proven. If I was to remove it, I might just put a cap on the firewall side with a hose clamp, to keep dirt out. Then I'd remove that 3rd hose which goes where the wipers are.
I figured most people have seen the vortex pics too, but heres the firewall side. (Not my pics)
http://i45.photobucket.com/albums/f70/meanvw/baffle1.jpg
http://i45.photobucket.com/albums/f70/meanvw/baffle2.jpg
Bouston
03-28-2006, 07:58 AM
but i like my 3rd leg ;-)
alf
:laughabove: I must be the only one who got that!!
loccusst
03-28-2006, 12:15 PM
I got it....
I was wondering what that odd shaped piece was running into the firewall. I thought maybe it was something to do with the heater in the car or something. Anyway, wouldn't removing this increase air flow though? I know it will cause issues with warranty claims. Only because the dealerships like to bitch about you moddin the car.
I figured most people have seen the vortex pics too, but heres the firewall side. (Not my pics)
http://i45.photobucket.com/albums/f70/meanvw/baffle2.jpg
Hmmm, looks like removing the rubber tube connector would do the trick of stopping the "noise". Put a cap on the wart on the firewall, and put a cap on the incoming tube, and you're done. Why would VW do this? "Technology" that seems associated with their ad campaign.
:frown:
T
Cuz the car sounds killer stock to me. Which is great for people that enjoy an OEM car without messing with it.
Big Bird went to the back yard to lounge by the pool. Elmo and Snuffy came along and wanted to float in the water so Big Bird got some pool toys and an air pump to blow them up.
In Elmo's little tube donut, Big Bird pumped 20psi to fill the toy and send Elmo on his way. Snuffy's giant raft also got a lot of air pumped in to fill it up. How much air pressure? Another 20psi.
It isn't the pressure that increases or decreases with the application of this Audi part, it's the volume of air that changes. No, that's not a pun for the noise but a measurement of the amount of space for pressurized air to fill. The only meaningful change in "boost" air pressure is going to be effected only by changing the properties of the compressor creating the higher air pressure to begn with; the turbo.
The argument could be made that the lesser volume of higher pressure air could be bad for the engine. But at such relatively low increases over ambient air pressure (14psi at sea level) the volume of air in this "third leg" resonator is most likely negligible. It's VW being Forge before the fact... and kinda jives with the 'no tuning required' ad campaign for the US. ;)
Someone says that description isnt applicabale to this situation. Read if you want.
http://forums.vwvortex.com/zerothread?id=2507758&page=2
tydale3
03-29-2006, 12:17 AM
no boost is wasted pumping sound into the cabin LMAO!!!!! The sound is from the Intake. I think is sounds good. Also the size of the chamber is not that relavant to boost pressure. If it was on the boost side performance wouldnt change with either pipe. Unless you would count the wasted boost going into the cabin for sound LMAOLMAOLMAO
It is on the boost side. Go to that Vortex thread if you want a huge discussion on that.
loccusst
03-29-2006, 12:48 PM
So what is the good about replacing the pipe? Eliminating the noise in the cabin? I never really noticed any noise in the cabin from the motor to begin with. I wonder what VW would say about getting rid of it?
in real loose terms, it sounds like a CAI to me. roughly..
feuerdog
03-30-2006, 12:30 PM
This noise maker pipe IS on the intake side of the engine, but it is ALSO after the turbo, which makes it a pressurized part. Boost IS wasted by having to take the time to fill this volume to make sound(simple physics).
The sound is kinda intake'ish at high rpms.
For those who care the removal of this noisemaker pipe MIGHT(unconfirmed) improve boost RESPONSE, not actual boost figures.
Chris from PD Performance has built some seriously fast VW's, he has extensive knowledge of all things VAG turbo and has several custom built 400+hp 1.8t engines under his belt. And while I don't always agree with his manner of arguement, I do trust his knowledge and experience. You guys can trash talk him all you want, I don't care, and i'm sure he doesn't either, but I do think you should know that he does know of what he speaks. He's been working on 2.0t's for alot longer than any of us has had our mk5's.
If you want the sound, keep it in.
If you take it off, don't expect to win any races because of it's removal. It's simply not critical to overall performance.
just my write up after trying this new pipe.
Overview:
Well..... Unless someone is really obsessed, it prob isnt worth the trouble. No, i dont have boost logs and charts, I dont feel the need to get that level of information for my own decision. So from just a normal driving point of view..
Noise:
Some noise is gone. It's hard to pinpoint exactly what is gone. There is still some intake noise, but the exhaust is now hearable in the high rpms to 6k+, where before I swapped the pipes, all you really hear is front roar. The exhaust doesn't sound quite as good to me now that I can hear it fully. I think the very nice tone in this car is attributed to both the intake noise tube combined with the exhaust. They go well together to produce a sharp crisp tone. It just didnt sound as good to me with this noise-less pipe.
Power:
The power is fairly impossible to quantify from just a driving perspective. That means its very hard to tell. I dont think the car "felt" any faster. I dont have a gauge to see if the boost climbed to spec .5 seconds faster either.
Conclusion:
I will be putting the GTI pipe back in for now. I didn't see enough benefits to taking it out, and I definetely lost some tone which I enjoyed. Since I saw no increased/sooner power availability or spool up, there is no reason for me to keep the A3 pipe in. (I dont plan to sell it, I may change my mind someday again..)
daigo
04-10-2006, 06:35 PM
Well, we don't have those "sound amplifier" for Japanese spec GTI, and Jetta GLI. I assume there will be no trouble by taking off these pipes.
The above pic is Japanese GTI, below one is US spec. You can see the extra pipe on the left side of lower pic. That is "sound amplifier" which we never know how it effects emotionally on our driving. Wish we could afford the pipes here... (no stock spec vehicle in Japan, no parts available)
It effects very good emotions in the driving experience my friend.
loccusst
04-10-2006, 08:21 PM
I could see this as something to do if you have mods done maybe???
shaunyeap
04-14-2006, 01:20 PM
My UK spec gti doesn't have that sound feeder thingy either :(
Will have to go check out my friends' cars =\
MachSchnell
04-27-2006, 10:11 AM
Cuz the car sounds killer stock to me. Which is great for people that enjoy an OEM car without messing with it.
X2 :thumbsup:
feuerdog
04-27-2006, 11:07 AM
Well..... Unless someone is really obsessed, it prob isnt worth the trouble.
Agreed.
I'm putting an exhaust in next, so noisemaker or not, it's not a big deal if you really think about it.
daigo
04-27-2006, 12:01 PM
How can I get one of this?
I asked my dealer, they cannot find the p/n.... :(
just my write up after trying this new pipe.
Conclusion:
I will be putting the GTI pipe back in for now. I didn't see enough benefits to taking it out, and I definetely lost some tone which I enjoyed. Since I saw no increased/sooner power availability or spool up, there is no reason for me to keep the A3 pipe in.
Glad I have my own previous experience to go back on while I think about the changes I will make to my 2008.
junker
03-01-2009, 06:43 PM
My question is how much does the entire noise assembly weigh? 5 lbs?
I'd like to just take out 5-10 lbs for something that does absolutely nothing but sounds like a kazoo. Makes absolutely no sense to me.
My question is how much does the entire noise assembly weigh? 5 lbs?
I'd like to just take out 5-10 lbs for something that does absolutely nothing but sounds like a kazoo. Makes absolutely no sense to me.
i doubt it weighs 5 lbs.
less..
junker
03-02-2009, 02:27 AM
i doubt it weighs 5 lbs.
less..
The hose, plastic tube, bolts, second tube, and the noise assembly? I'll let you know when I yank mine.
NoIfCustoms
05-24-2009, 02:10 PM
just my write up after trying this new pipe.
Overview:
Well..... Unless someone is really obsessed, it prob isnt worth the trouble. No, i dont have boost logs and charts, I dont feel the need to get that level of information for my own decision. So from just a normal driving point of view..
Noise:
Some noise is gone. It's hard to pinpoint exactly what is gone. There is still some intake noise, but the exhaust is now hearable in the high rpms to 6k+, where before I swapped the pipes, all you really hear is front roar. The exhaust doesn't sound quite as good to me now that I can hear it fully. I think the very nice tone in this car is attributed to both the intake noise tube combined with the exhaust. They go well together to produce a sharp crisp tone. It just didnt sound as good to me with this noise-less pipe.
Power:
The power is fairly impossible to quantify from just a driving perspective. That means its very hard to tell. I dont think the car "felt" any faster. I dont have a gauge to see if the boost climbed to spec .5 seconds faster either.
Conclusion:
I will be putting the GTI pipe back in for now. I didn't see enough benefits to taking it out, and I definetely lost some tone which I enjoyed. Since I saw no increased/sooner power availability or spool up, there is no reason for me to keep the A3 pipe in. (I dont plan to sell it, I may change my mind someday again..)
Not sure how you drive, but I noticed more of a difference with this mod than I did with adding the intake.
Speaking personally for my DSG, the slight lag that people complain about is totally gone. your acceleration feels directly tied to your foot. It's a lot smoother of a pull, and even the shifts are smoother and a more constant pull.
The only thing missing from the vortex write up is there are 2 bolts on each side of the resonator under the rain tray that have to be removed.
End result, you lose 2 cubic feet or so of volume that has to charge before you feel the boost.
This is by far the best 100$ I have spent. Now all I hear is my Vader intake noise.
Not sure how you drive, but I noticed more of a difference with this mod than I did with adding the intake.
Speaking personally for my DSG, the slight lag that people complain about is totally gone. your acceleration feels directly tied to your foot. It's a lot smoother of a pull, and even the shifts are smoother and a more constant pull.
The only thing missing from the vortex write up is there are 2 bolts on each side of the resonator under the rain tray that have to be removed.
End result, you lose 2 cubic feet or so of volume that has to charge before you feel the boost.
This is by far the best 100$ I have spent. Now all I hear is my Vader intake noise.
That is an old post. I have since decided I like it removed after many tests back and forth.
junker
05-25-2009, 02:44 AM
That is an old post. I have since decided I like it removed after many tests back and forth.
You sir are a stand-up guy. :thumbsup:
fraindog
05-25-2009, 06:56 AM
Not sure how you drive, but I noticed more of a difference with this mod than I did with adding the intake.
Speaking personally for my DSG, the slight lag that people complain about is totally gone. your acceleration feels directly tied to your foot. It's a lot smoother of a pull, and even the shifts are smoother and a more constant pull.
The only thing missing from the vortex write up is there are 2 bolts on each side of the resonator under the rain tray that have to be removed.
End result, you lose 2 cubic feet or so of volume that has to charge before you feel the boost.
This is by far the best 100$ I have spent. Now all I hear is my Vader intake noise.
Any vids? And why doesnt someone do a video showing the comparison between them..this could of been solved along time ago..
vBulletin® v3.8.0, Copyright ©2000-2009, Jelsoft Enterprises Ltd.