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Is the air intake manifold needed that sits behind the cage and in front of the bed? There is one intake that feeds the air filter; a second one that goes do the transmission? And a third that is some sort of an exhause.

The reason I ask is that they are very loud. Can they be blocked/removed (obviously not the one that feeds the air filter)?

I use my 650 for hunting and need it to be as quiet as possible. I have already put a Benz Silent Rider on it and that helped the exhaust db some, but there is still a lot of noise from the air intake manifold.

I had considered the following:
Running a thick air intake tube up from the air filter assembly to the top of the 650 and putting an additional filter on there or just running a intake tube all the way from the carb to the top and putting on an air filter there.

Second, if I can remove/block the remaining two ports, I was considering putting some sort of filter/foam to help lower the sound.

Any suggestions?
 

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When i put foam in mine it smoked the rollers in the clutch.I used a very coarse foam too.I would not recomend anything in the intake or the exhaust part of the cvt venting.I am pretty sure what is the problem is the intake for the carb.Some coarse foam in there might help.



 
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