Leon Posted September 22, 2012 Share Posted September 22, 2012 Looks like "n" should equal 1, 2 or 3 depending on which harmonic you are trying to match. Not 440... I get L = .347m at the first harmonic... Right, although that's without taking d into account. Quote Link to comment Share on other sites More sharing options...
vega Posted September 23, 2012 Author Share Posted September 23, 2012 Looks like "n" should equal 1, 2 or 3 depending on which harmonic you are trying to match. Not 440... I get L = .347m at the first harmonic... Hmm well I feel sheepish, thank you for the correction. That makes WAAAY more sense. Quote Link to comment Share on other sites More sharing options...
zero Posted September 24, 2012 Share Posted September 24, 2012 I am going to go ahead and say that for the most part this theory must be wrong (or I did my math wrong) and the piping matters less than the muffler design. I am betting that the muffler systems on say a corsa vs a magnaflow are very different in where the baffles are placed. In the muffler one has baffles placed in a way to bring the lower grumble sound out of the tubing. The other has baffles placed so that the baffles are placed in a way to bring a crisp exotic sound. I know exhaust pulses and the like are a huge factor etc etc etc. Though I think this shows (correct me if I am wrong) how different mufflers can change the sound extremely differently. Yes. As has been stated here a few times, with an exhaust the length of the tubing is only a minor factor in the sound it produces. Mufflers are often shaped to create resonances that interfere with the frequencies introduced to the muffler by the engine itself, cancelling out the sound. Quote Link to comment Share on other sites More sharing options...
vega Posted September 24, 2012 Author Share Posted September 24, 2012 Yes. As has been stated here a few times, with an exhaust the length of the tubing is only a minor factor in the sound it produces. Mufflers are often shaped to create resonances that interfere with the frequencies introduced to the muffler by the engine itself, cancelling out the sound. I have been listening to many different muffler sounds in a myriad of configurations. I am making an attempt to contact both OBXr and this particular "youtuber" to find out which obx system this person used. This is the exact sound I am attempting to make. I like the growl to it vs the traditional dump truck open header/ header to glass pack sound that a great deal of people tend to enjoy. Quote Link to comment Share on other sites More sharing options...
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