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      05-24-2014, 01:38 AM   #80
combatbmw
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Drives: 20' X3M CP
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Quote:
Originally Posted by E60orBust View Post
I thought the point of the system was to have zero drone, regardless of valve/valveless version?
Yes regardless it's designed to reduce drone and exhuast sound in general when you don't want it.

Not sure to what comment your referring to but maybe I wrote something wrong so I'll clarify.

System valves or not is designed to have no drone.

Valves units are designed to be less noisey whole crusing but when you gas it valve opens and you get all your sound back.

Hope this helps.
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