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One thing I've been noticing about my 310 GS is a strange noise when I pull the throttle.

It sounds like paper flapping in the wind, basically. It starts the moment I turn the throttle but becomes less audible once I hit around 5,000 RPM (maybe because the engine noise drowns it out then). It's definitely coming from the front of the bike. Once I roll off the throttle, it goes away again.

Is this normal? Do you have the same?
 

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One thing I've been noticing about my 310 GS is a strange noise when I pull the throttle.

It sounds like paper flapping in the wind, basically. It starts the moment I turn the throttle but becomes less audible once I hit around 5,000 RPM (maybe because the engine noise drowns it out then). It's definitely coming from the front of the bike. Once I roll off the throttle, it goes away again.

Is this normal? Do you have the same?
Yup. The 'reverse engine' puts the intake noise up where you can really hear it.
 

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2019 BMWG310GS,2021 Can-Am Spyder RTL
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One thing I've been noticing about my 310 GS is a strange noise when I pull the throttle.

It sounds like paper flapping in the wind, basically. It starts the moment I turn the throttle but becomes less audible once I hit around 5,000 RPM (maybe because the engine noise drowns it out then). It's definitely coming from the front of the bike. Once I roll off the throttle, it goes away again.

Is this normal? Do you have the same?
It is rather annoying--so I make sure to wear ear plugs always on mine. I noticed if you place your hand just in the right front of the fuel tank, it dampens the intake noise and I have considered placing some kind of permanent "flap" there to block it. Maybe a piece of stiff styrofoam--but not enough to block any air to the intake horn. Don't cut the intake horn part of the air cleaner--someone else on this site said it makes it worse
 

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I just call it the “Ferrari effect” and remind myself that it’s gonna be hard to drown it. Be a very quiet bike without that feature.
 
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