Dual Exhaust -vs- Single

[TheOne]

theorically speaking....if two exactly same cars...only difference is the muffler or exhaust...one has a cat back dual muffler and the other has a single cat back (Same Exact Exhaust)..would there be a downside to have the dual muffler besides extra weight? would it make any difference?

[**DONOTDELETE**]

it all dependz on the size of the engine we are dealing with.. big v8 engines favor dual exhausts to move the air out from the 2 rows of cylinders. 4 bangers, however, can suffer from a dual exhaust because the engine itself doesnt have the capacity to generate that much exhaust gas. Thus, that is why u no civics buzzing around with dual exhausts.

to address the part of ur question about weight... i really believe that 10 lbs extra is negligable, because of the extra power you get from a dual exhaust on a v6, i6, v8, v12, etc engine.

[TheOne]

bigger displacement engine or just a bigger engine will benefit a dual exhaust...but how about 4 cyclinder with many internal mods... would that favor a dual or single?

[**DONOTDELETE**]

bigger displacement as in v6 and above ... a 4 cyl would not have enough cc, nor cylinders.. it would not produce enough exhaust gas for the dual exhaust to be efficient or effective

[**DONOTDELETE**]

Then explain the reasoning behind the S2000's dual setup.

[Meeks32]

Its not a "true" dual exaust, its just splits down the pipe & into 2 mufflers. It may increase performance, but im sure they did it mostly for looks.

[**DONOTDELETE**]

so would a "true" dual exhaust setup for a 4 cyl be a pair of headers for two ports each?

[sunny sr20]

A dual exhaust system for a four cylinder engine- no matter what size- is useless. It is a riceboy gimmik. You notice the new Neon RT has dual exhaust- it is actually just one muffler with two exit pipes spread apart- useless. The better exhaust setup for a 4-banger would be larger diameter exhaust in some cases- and a less restrictive muffler and cat. converter. A header would also be beneficial in most cases- depending on your engine- where you want your power to be- and the manufacturer of the header. Materials also play a large part in power gains/ efficiency, etc... But a dual exhaust system will not create any more power than a single exhaust system on one bank of cylinders.

[Afty]

<BLOCKQUOTE><font size="1" face="Verdana, Arial[/img]quote:</font><HR>Originally posted by sunny sr20:
But a dual exhaust system will not create any more power than a single exhaust system on one bank of cylinders.<HR></BLOCKQUOTE>
What about dual exhaust on an inline-6?