Quote:
Originally Posted by Misuseofyou
So, if you have 2.25" or 2.5" and you split that out to two mufflers, are you gaining anything?
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No, it's better to have the same size piping (or slightly bigger piping as it goes out) all the way into a single muffler. Two mufflers would be extra weight, would drop velocity down quite a bit as it goes through two separate pipes and mufflers.
There's no reason not to just have a single in/dual out just like the OP is asking for. Just like what we PM'd about, as the dual tips can be accomplished with mere piping coming out from a single muffler and routed to either side of the car.
V-engines tend to have individual mufflers per each bank of cylinders likely for enhanced muffling since it would be a lot of exhaust gases to cram from 8 cylinders into one muffler.