For my '06 12Ss, there are two individuals here in the States to whom one can send a stock exhaust pipe, and they will modify it for more free flow and obviously more sound (quieter than other aftermarket pipes, however). One of them (Odie at Special O.P.S.) keeps the exhaust servo intact, while Randy at Hawk Performance deletes it. Is there a reason why keeping the servo intact and functional in a modified exhaust would be preferable to deleting it and thereby making the can more like any other aftermarket can?

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2006 XB12Ss..... 1998 S1W..... 1996 S2T
We do not need the help of our friends so much as confidence that they will help us when we need it. –Epicurus

How much is the change in backpressure?

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"It is often said that before you die your life passes before your eyes. It is in fact true. It's called living."
Terry Pratchett

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08 Specialized Langster

I'm not sure, but I will find out.

My layman's thinking (without all the technical data) was that the servo just seems like such a good idea as a way to accommodate both high end output and low end torque... the idea of having an exhaust system that adjusts (even a little) depending on the requirements of the ride seems worth keeping. Is this at all right? Or is this one of those "it depends..." kind of answers?

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2006 XB12Ss..... 1998 S1W..... 1996 S2T
We do not need the help of our friends so much as confidence that they will help us when we need it. –Epicurus

Well let me put it this way.

I wired my valve open, before fitting a Remus can, and it made no diff to the low end torque or normal engine running and just made the OEM can sound louder at low revs. The sound was not nice though. A sort of "beans-an-cheese" farting noise so put it back untill I got the Remus can.

I hear tell that the system on the Buell is for sound emissions and not power like the Yamaha
Ex-Up system. Let me know if otherwise.

The other thing is, unless you DIY so cheaper, the work to mod the can and Cam-Coat it might cost you more, or close to it, a S/H SS Remus can. I did me anyway.

Any aftermarket or re-worked OEM can, mostly, will need a fuel adjustment to be 100%. Your 06 bike can use Spy for that unlike the newer bikes.

from American Sportsbike Exhaust "shootout":



It's that "blatt-ier," beans'n'cheese issue that has me holding back. The sound difference is a big issue for me, and unless I can hear another bike set up with this, I don't think I'm ready to send away my stock exhaust to go under the knife. After all, there are a good number of things to spend money on with this bike that will help it last longer (FS tensioner, bearings) and really change the ride (tyres) - swapping the OEM pipe isn't as much of a priority (at least until I hear a good one in person that I must have )

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2006 XB12Ss..... 1998 S1W..... 1996 S2T
We do not need the help of our friends so much as confidence that they will help us when we need it. –Epicurus

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FUBAR pilot

You only need two bikes in life-an S1 and a Multistrada!