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Old 11-13-2009, 03:09 AM   #69 (permalink)
370Zsteve
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Quote:
Originally Posted by RCZ View Post
5hp aint worth the less than spectacular sound.
But add the weight savings of a single vs a dual, and then maybe the equation improves?

There is a ton of conflicting info on the web about this subject (single vs dual), and a ton of outright BS (one site goes so far as to say that exhaust gas does not flow backwards at all) but I've always understood that a properly designed single is no more or less efficient or powerful than a properly designed dual. It still comes down to balancing flow and velocity with the correct diameter, bends, welds and design.
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