Click/Knock

[flynrider]

I think Ferret noted once that with our naked bike, and depending on what kind of helmet you wear, wind or fly screen, etc, you will hear engine noises that aren't normally heard.

The injector clicking has surprised a number of people, especially if they came from carb'd bikes.

I fell into that category. I noticed the pronounced clicking when I'd crank hard on the throttle accelerating in 2nd gear. Turned out that was because I was still at a relatively low speed, so the wind noise wasn't covering it up.

Never having owned a fuel injected bike, I initially thought it was pinging/knocking from detonation.