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Discussion Starter #1
After removing the secondary butterflies, any of you guys notice that the valve noise, immediately after wacking the throttle open (under load), is really loud and noticeable? I hope it's not just my bike and something went wrong during the removal process, haha.
 

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Your head is directly above the inlets, with the secondaries gone you've got a straight path from valves to ears once the main butterfly opens.
 

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Discussion Starter #4
Thanks guys, that makes alot of sense since I don't hear it under engine braking.

A little more noise coming from the intake, yes.

Not sure that I would say "valve noise". You didn't drop a screw, did you?
I checked my bags of screws and butterflies, they're all still there :lol:
 
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