2010 GS 'zorst valve thingy Q

[WindyChuffer]

I have a 2010 GS on loan for a week. I thought these things had a magic exhaust flap thingy and corresponding magic button but am fekked if I can find it.

Just interested. Its rather loud compared to my 09 which has Remus headers and Akro can (with baffles in).

(my 09 GSA is in for a gearbox re-build to suspected fekked input shaft bearing)

Ta M.

 

[SamD]

It's not a button. The flap opens and closes at certain revs. Makes feck all difference as far as I can tell

 

[ghiribizzo]

Yer must be getting old if you think it's rather loud...
Usually produces reasonable pops and farts on closing throttle and downchanges.

 

[WindyChuffer]

It's not a button. The flap opens and closes at certain revs. Makes feck all difference as far as I can tell

Well thats bollox then.

I wonder how much extra weight that adds (and cost and probability of failure).

 

[SamD]

Well thats bollox then.

I wonder how much extra weight that adds (and cost and probability of failure).

I believe - and don't quote me on this - that it's emissions related

 

[Wapping]

I wonder how much extra weight that adds.....

A lot less than the average Tosser adds in bling..... and by sitting on it.

 

[Robbo1200ADV]

. I thought these things had a magic exhaust flap thingy and corresponding magic button but am fekked if I can find it.

the Valve is at the joint where the cat meets the muffler 2 cables going to it. you cant turn it on or off,it seems to make my 2010GSA breath better and certainly makes it smoother.There is no magic button

 

[Giles]

A lot less than the average Tosser adds in bling..... and by sitting on it.

Ahhhh, the voice of experience

 

[The Nutter]

I believe - and don't quote me on this - that it's emissions related

Sorry to quote you, but the idea behind it is to give you more in the low and mid range (flap shut) and then it opens to allow a better flow at high revs. I can't imagine BMW wasting R&D on an item that doesn't work and as it's very similar to Yamaha's EXUP valve (used for decades) there must be some benefit behind the thing.

Discuss

 

[(RIP) Bin Ridin]

I thought we read this thing closes in at the revs at which the drive-by noise test is done, and is only to allow a fruitier noise at low revs while still passing the noise test?

 

[(RIP) Bin Ridin]

And closed...

 

[Horse1200]

The magic button, comes in the form of the black tubular device on the right handside of the handle bar. Twisting it in a clockwise direction makes more noise and more speed...

 

[R17GSR]

Did none of you get the little black magic wand from the dealer?