Another Exhaust Thread :)

[NoDOHC]

Ted is right, it is difficult to attenuate all frequencies with a chambered muffler.

I work with constant-speed engines, so for me, resonance tuning works really well.

I have never seen a production car muffler that works over the entire frequency spectrum.

A turbocharger is the closest thing you will get .

Still the thread that I posted explains the basic functionality, so you can pick a few mufflers to optimize attenuation without destroying performance.

The post was meant to answer the series/parallel question and the modeling of the exhaust system. Not as an exhaust selection guide.

In this case of actual performance of available options, I would defer to ReTed - experience trumps theory 100% of the time.

I will still argue that a carefully designed exhaust system could make minimal backpressure and still effectively attenuate the sound. As I pointed out in the technical section, sound attenuation does not have to cause backpressure (attenuating the AC does not effect the DC).