Calling all exhaust nerds! Viability of a reversed twin loop muffler?

So a friend just turned me on to the Mugen Twin Loop mufflers during a discussion about making a center-exit NA/NB exhaust, and I love the concept of having the exhaust pass through the same cavity twice (), but for packaging it would be better if the inlet and outlet were on the same end. Has anyone toyed with basically putting a 180* exhaust elbow of appropriate bend radius on one end of a dual/dual straight through oval glasspack to achieve this? Would it lead to weird quiet/loud spots where the sound pulses either canceled each other out or reinforced one another, or would the muffler packing reduce/eliminate that effect? That far downstream, would the potential interactions between the opposing directions of exhaust flow hurt power output more than a regular twin loop (where both passes of exhaust flow are going the same direction relative to the muffler body), or am I just vastly overthinking this and should just bite the bullet and buy some muffler components from Cone Engineering and roll my own and try it?

I think you should try it, and report back with results, and maybe videos/sound clips.

What aboot a Corvette C5 muffler comme ca?

What's the advantage of the twin loop mufflers? I tried googling but too many Honda forums.

A quick google search tells me that a twin loop muffler is essentially a Dynomax Super Turbo muffler that looks stupid, takes up more space, and costs a lot.

I think the idea was to function as basically a pair of glasspacks side by side, but with more volume inside the muffler for packing. Supposedly they sound pretty great and are effective at noise reduction

http://www.mugen-power.com/english/philosophy/02.html

Looks like there is supposed to be crossover with the idea that the high and low pressure pulses cancel each other out to aid in dampening the noise. Not sure how tuned the spacing on the flow has to be for it to be effective.

The premise from my understanding of their diagram is that some exhaust flows straight through the muffler while some flows through the loop to achieve this I think it's necessary to have the inlet and outlet on opposite ends.

Just get a stock S2000 muffler, they are twin loop

Slyp_Dawg wrote: Has anyone toyed with basically putting a 180* exhaust elbow of appropriate bend radius on one end of a dual/dual straight through oval glasspack to achieve this?

Magnaflow, among others...Except that they kept it all internal.

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carguy123 wrote: Just get a stock S2000 muffler, they are twin loop

It looks kind of like it from the outside, but really is just another design of chambered muffler.

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The 'twin loop' muffler actually runs the exhaust through the muffler twice.

I've never opened up an S2000 muffler but conventional wisdom said it was the twin loop and as you said, it looks like it from the outside.

Yeah, from the outside it really looks like there should be something more 'trick' going on there than really is. Interestingly enough, the S2000 CR dropped the external turn-around.

How do they sound on v8?

Driven5 wrote: Yeah, it really looks like there should be something 'trick' going on there from the outside. Interestingly enough, the S2000 CR dropped the external turn-around.

I had never noticed that. And it was only on the CR?

In reply to carguy123:

That's what the internet tells me...