Quote:
Originally Posted by Tervuren
Pulse length of the exhaust, each time it fires you have a low pressure wave behind it, the larger the pipe with the same flow, the shorter the wave, if they space out too far, the pulse behind can't use the tow of the pulse in front. ooo-ooo-ooo might be the spacing on the smaller exhaust, larger, its O---O---O, the big spaces are less efficient. Higher RPM reduces the spaces, so at race RPM it has more flow.
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hmm... so just replacing the muffler wouldn't help the low end torque? in order to get a little more torque, i'd have to replace the entire 3" pipe, right?