Quiet exhaust ???

[stylus350]

Hi,
If you want to quiet down the exhaust i saw a article in banzai magazine that say that you could fit a purpose made butterfly exhaust valve which at a push of a button reduce the sound and will drop the bhp a little but it would be alot quieter and that would mean you could fit a race exhaust but then drive to a race track with it on quiet and when they check sound level it will pass then when you about to race you could press the button and have on full power and the track people would never know.

I looked into these just before getting the RB. The ones I found bolted between the mid pipe and back box joint. It was controlled by a cable so you could set the butterfly at any position from fully open to nearly shut. It would be a good solution for someone who likes their loud exhaust but does not want to p1ss off their neighbours.
 Using it once on the open road though would seriously reduce performance as it basicly reduces flow to reduce noise.

[fdlover]

Now the pops sound like farts and the bangs sound like someone shooting a tin can with an air rifle... :reallymad
 

haha! excellent explanation!