The symposer carries engine noise into the cabin Lee.
But as you've got a sport exhaust you won't notice it.
Just get a 35mm alloy bung off ebay, remove the symposer and block the hose to it from the Intercooler hardpipe

 

Nice 1 stingy . wished i know this a few weeks ago when i put the forged d/v on and removed my chav valve what a pain in the bottom that was to get the pipe back on the Symposer..

 

Jesus mate tell me about it.

I had a nitemare with mine yesterday.

Took the collins dv off no bother bout 5.40pm thinking another 20 mins before it gets dark should leave me plenty of time lol.

When took the hose out the jubilee clip fell off onto the undertray and had to jack car up in dark

The hose was a nitemare to get back on the symposer and intercooler.

Ended up out with a torch holding it between my teeth.

Never again will a dv go back on that car in my ownership.

Much prefer the growl in the cabin now anyway, woohoo.

 

Yes mate mine is blocked off and as stingy says it just carries noise

 

Can cause boost problems also if diaphram is split,thats why i blanked mine off

 

Air from the pipe in between the throttle body and intercooler is pushed against the the red diaphragm, the little hole on it allows air throw to the grey one and makes it vibrate creating the 5pot noise we all like.

If the grey diaphragm is damaged you'll loose boost.

 

[sub]Mine was split here as in pics and was causing boost issues[/sub]
[sub]

[/sub]

 

cheers fella for all ya info on this 1 .. yup lernt some think else again from you fellas !

 

any pics of the part you remove ?

 

give me 2 mins and i will post the link

http://www.focusstoc.com/forums/topic/101883-how-to-remove-symposer-hose/

 

how would you know if the diaphragm had split?

 

You would get a ESP light and a P101 fault could showing a MAF error due to the airleak - also you would also hear the leak under load. - To date we have only had two with faulty diaphrams in over 7 years of working on ST's and RS's

 

so the only thing that you will gain (or lose) by removing it is the sweet 5 pot sound? thats madness why would you remove it?

 

you don't lose any 5pot sound with a decent exhaust.

Mine split and I know of 2 others.
Plus if you seen the price of a new one you'd want to block it off.
http://www.focusstoc.com/forums/topic/95377-has-anyone-elses-symposer-split/page__hl__%2B%26%2339%3Bsplit+%2Bsymposer%26%2339%3B__fromsearch__1

 

Mines is getting taken out this sat

. The engine bay looks better without it too I think.

 

Easier to clean too

 

Mine went the journey when the DV was installed.

 

I lost my Rumble sound in the cabin so decided to split it. There was a big split in the diaphram! I repaired the split, put it back together and refitted it. I got the cabin noise back by doing this

 

Is this ok to do with only the standard OEM DV?

Thanks

 

i shouold not see y not as every body is aying all we will lose it the 5 pot rubble in the car! as long as u hav a d/v u be right .
i used to hav a collins 1 and the std 1 both on lol