Quote:
Originally Posted by dd1981
Yes that is 100% correct. There is a smaller tube leading into the Helmholtz chamber that still slows some of the sound to drown out. This is naturally designed by BMW to severely reduce drone.
Someone in an earlier post mentioned they were planning on plugging this hole as well. I advise against this because essentially what you will just end up with is straight pipes. No sound can escape into the Helmholtz chamber hence it will drone and defeating the purpose I set out for.
At this point if he's gonna plug up that hole as well you may as well cut the muffler off and just straight pipe it.
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Thanks man.
I might try it out on my own car, but I have two mufflers on my f10, and zero experience. ha ha