Quote:
Originally Posted by whaap
I would think of that more as a sound reducer and not a sound eliminator. I'm sure it cuts down on some of the volume coming into the cabin but I doubt it does a total stop. You're still going to have sound coming up to your ear plug and also sound will be using your firewall as a resonator. If you went in the engine compartment and eliminated the tube I would be willing to bet it would be even quieter.
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Actually, I've got it capped off and it makes a pretty noticeable difference. You're right, its not an eliminator, but it does quiet it down a whole hell of a lot.