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| Posted: 08-15-2014 10:18 am |
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subwoofer
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On Ms Jensen there is a smallish resonator around where I would have expected a front muffler to be. As I understand it, in terms of exhaust manifold tuning you need an open volume in that spot since it effectively terminates the tuned transmission line from the head through to the rest of the exhaust system. With the resonator the only requirement for the rest of the exhaust from there and rearwards is to be low back pressure - without it the exhaust pipe all the way back to the back box becomes part of the manifold tuning system and may impact performance. Caveat Emptor: I am no expert on exhaust systems, but knowing a little bit about transmission lines for RF the above explanation makes sense. -- Joachim
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