It gets pretty warm in there but I don't think anyone has taken a temp reading before and after snorkels. The only fan it has is the fins on the back of the primary so lengthening the intake and exhaust will slow the flow down some. I would guess if you start smelling rubber and loosing belts...that's a good sign its too hot...lol
I thought there would be a rubber factory coupler going into the cvt intake. And attached to the pvc .. Then up to the top...havent really looked at The snork instructions for the 12 . Realy didnt think that much had changed
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