What's this little sucker all about then ?

Flipper_Man

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Got a loaner from BMW North Oxford whilst my GSA is having its gearbox and clutch replaced/rebuilt/tinkered with.

Its a 2010 GS but noticed this little contraption attached to the exhaust - any ideas what it is ?

Apologies if already the subject of a million threads...
 

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'Power valve' / 'Emissions check' valve, 'Flap thing' or whatever people chose to call it this month.....

* Electronically controlled exhaust flap for an aggressive muscular sound.

Did you notice the twin cam heads?
 
Wapping said:
'Power valve' / 'Emissions check' valve, 'Flap thing' or whatever people chose to call it this month.....

* Electronically controlled exhaust flap for an aggressive muscular sound.

Did you notice the twin cam heads?
Click to expand...


I believe the technical term is 'Fruity Valve' :D
 
got a loaner in the drive right now with one. sounds great IMO.

pulls like a train too :thumb2
 
cookie said:
got a loaner in the drive right now with one. sounds great IMO.

pulls like a train too :thumb2
Click to expand...

I thought likewise (had a go on one a couple of weeks ago) - sounded great and went like stink (mind you, I do ride an 1100 ;) )
 
It'll be interesting to see how these power valves cope with a couple of winters and river crossings etc (for those that do that sort of thing on a £14k bike ;) )
 
More complexity, more weight, more to go wrong, more to keep the dealer workshops busy, more profit for dealers.

What's not to like?
 
MattW said:
It'll be interesting to see how these power valves cope with a couple of winters and river crossings etc (for those that do that sort of thing on a £14k bike ;) )
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Even on your polished and preened sportsbikes they eventually stick is some inconvenient position. I'm sure that wouldn't happen on a BMW however.
 
Well I love my exhaust flappy thing - it sounds great and the bike has loads more low down torque - this new engine and exhaust and what ever else they have done is a big improvement.
 
Engineer said:
Well I love my exhaust flappy thing - it sounds great and the bike has loads more low down torque - this new engine and exhaust and what ever else they have done is a big improvement.
Click to expand...

This is the biggie - the new fiendishly complicated cylinder head with odd shaped cams :D
 

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