- mnrider wrote:
- what if I DO have the stock exhaust, can I bypass it?
There's some thought to the EXUP giving a small gain to performance at certain rpm ranges. Others say it's simply a noise reduction device.
There's a video around here of when it works. 99% of the time the valve is wide open and does nothing.
Not sure why yours is making noise when you turn on the key though.
Sounds as if something is wrong. Any chance you can post a video of it along with the noises it's making?
Only noises you should hear when you turn the key is the fuel pump.
Can you tell if the "push-pull" cables are still attached to servo?
Those cables should run through bike and connect to EXUP valve on stock exhaust just before the muffler canister.
You have no error code on your dash panel?
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2008 WR250X
Gearing: 13t - 48t
Power Commander 5 / PC-V
Airbox Door Removed - Flapper glued - AIS removed
FmF Q4
Bridgestone Battlax BT-003rs