The TBs should not be overly loud like you're describing. But the subthrottle actuator will make a a high frequency sound when it's trying to position itself and adjust the secondaries. You'll be able to hear it, but it shouldn't be louder than the engine noise, especially with a helmet on. What you're describing doesn't sound right.Just curious does the gen 3 throttlebody give out a high frequency low amplitude type constant whining noise? Normal, not really? It’s loud enough to where I can hear it over the motor if I’m close to the tank.
OK. The G3 uses direct-control primary butterflies and electrically controlled secondaries. You turn the throttle, the primary valves open. The ECU controls the secondaries based on gearing, throttle position, and other other factors.I had my seat off and saw the servo move when the bike started then went to the set position. I know the noise is coming from under the tank and it sounds like it's my throttle bodies. The throttle bodies make an adjusting noise when the bike turns on as well, but then they just keep ringing. No helmet on, its not too loud, but it's there.
I also related it to the throttle bodies because my bike idled for a minute the first time I started it up, then very very slowly died. The only way it didnt die is is I adjusted the position of the flaps with the screw on the side of the bike, and it runs fine now, but still has the humm
Side note, I did an engine swap, but didnt touch the position of the throttle bodies.