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Flap on R back box ?

Posted: Sat Jul 03, 2010 9:16 pm
by Shaun
I was just nosing around the car today and looked at the exhaust back box, I  noticed a motor attached to it and a rod ( the left exhaust end tailpipe on the scirocco) , a rod runs into the exhaust end pipe ?, I'm assuming this is like the flap on the R32 ?, question what does it actually do ?, reduce noise at lower revs, or help with back pressure etc ?

Re: Flap on R back box ?

Posted: Sun Jul 04, 2010 12:37 pm
by Chungster
oh yeah never noticed that before!

I think it must the "tuned noise" system they originally mentioned.

also there's 2 pipes going into the RH exit, and just one into the LH side one with the motor flap attached.

Re: Flap on R back box ?

Posted: Sun Jul 04, 2010 6:25 pm
by raffoul232
I have a question about the exhaust on the r. Why did they only use 2 tubes on one side and only 1 on the other :shrug:

Re: Flap on R back box ?

Posted: Sun Jul 04, 2010 6:39 pm
by Shaun
raffoul232 wrote:I have a question about the exhaust on the r. Why did they only use 2 tubes on one side and only 1 on the other :shrug:
perhaps 4 was to many and 2 wasn't enough ?

Re: Flap on R back box ?

Posted: Sun Jul 04, 2010 7:46 pm
by raffoul232
hahahahahha, im serious why for the exhaust system they used 3. Or is the one on the left as thick as both put together?

Re: Flap on R back box ?

Posted: Sun Jul 04, 2010 8:12 pm
by Andy-GTI
Its not a motor, but a vacuum operated valve.

Had a wee play with it tonight, just a flap that shuts off the pipe at that side. Not entirely sure why its there, its open at idle.

Re: Flap on R back box ?

Posted: Sun Jul 04, 2010 9:04 pm
by Chungster
i'd say the RH side exit is operational at all times...while the other side is open at certain times. Does that make a change in exhaust note? Dunno.

Re: Flap on R back box ?

Posted: Mon Jul 05, 2010 5:00 am
by Shaun
raffoul232 wrote:hahahahahha, im serious why for the exhaust system they used 3. Or is the one on the left as thick as both put together?
Sorry, I was serious lol, perhaps a back pressure thing?, or as you say the two pipes are quite thin, and the sinle one if quite wide, I guess to accomidate the flap

Re: Flap on R back box ?

Posted: Tue Jul 06, 2010 10:26 am
by Anakin
raffoul232 wrote:I have a question about the exhaust on the r. Why did they only use 2 tubes on one side and only 1 on the other :shrug:
that Car looks familiar.
:clap:

Re: Flap on R back box ?

Posted: Tue Jul 06, 2010 10:28 am
by trix
Anakin wrote:
raffoul232 wrote:I have a question about the exhaust on the r. Why did they only use 2 tubes on one side and only 1 on the other :shrug:
that Car looks familiar.
:clap:
well if you will go posting pics of your undercarriage on the internet.. ;)

Re: Flap on R back box ?

Posted: Sun Jul 11, 2010 11:19 am
by raffoul232
Anakin wrote:
raffoul232 wrote:I have a question about the exhaust on the r. Why did they only use 2 tubes on one side and only 1 on the other :shrug:
that Car looks familiar.
:clap:
:lol: :lol: whats even funnier is that i got it from another forum. I think it was a french one :nod: :lol:

Re: Flap on R back box ?

Posted: Sun Jul 11, 2010 11:41 am
by monkeyman
That gotta look stupid in the winter when your sitting a traffic and smoke is only coming out of 1 tail pipe. :( Or is it something to do with not covering people walking down the path with exhaust fumes? Which in that case its rather cleaver. :yes: