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"true" dual exhaust...is it better or worse?
https://slantsix.org/forum/viewtopic.php?t=54221
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Author:  '67 Dart 270 [ Tue Jan 07, 2014 9:30 pm ]
Post subject:  Ok

I see, and if the Y to the single doesn't sacrifice power, then why run duals?

Makes sense...

Is there any math behind how long your downpipes run before going into the Y with regard to power, noise or anything else? I've seen the Y pretty close to the dual manifolds and as far back as past the tranny...what's the logic there? I think space is an issue near the tranny, but otherwise is there any gain from closer or further from the manifolds for the Y?

brian

Author:  Aggressive Ted [ Wed Jan 08, 2014 7:12 am ]
Post subject: 

Quote:
My true dual setup sounded awesome at idle and cruising at 60+ mph, but the drone at certain mid-range rpms was absolutely horrible....
This is where the Flow Master HP2's really shine when installed in front of a FM70 or a conventional muffler. They eliminate all that horrible resonance. My system is super quiet and it's 2.5". Performance increase is very good and strong on a tired stock motor.

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