[Dingo]

I noticed the other day when I started up the bike to warm up, that the exhaust note was different. It sounded like the exhaust valve wasn't open... Within a minute or two it was normal, and throughout my ride also. Anyone hear this or have this happen?

 

[DJ Shrug]

I hear this occasionally but always brush it off as me not knowing the difference. My valves open 100% of the time too. I try to let the bike warm up to >110 before riding off now.

What was the change in exhaust tone for you?

 

[Dingo]

...What was the change in exhaust tone for you?

It was severely muffled sounding.
I'll be ready to record video of it next time it happens... keep you posted.