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Originally Posted by Weasy2k
ANyone know how to control exhaust notes?
What effect does; shirinking the exhaust tueb then enlarging back to size, larger diamter tube (kinda like a ho9llow cat), bends do?
beside make power differences...
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Not sure if i got your question right, but a hollowed cat makes a lot of turbulence and resonance, bad both sound and performance.
Generally what you want to do to make a less noisy system, is to have a bend right after a silencer box. This creates a higher pressure in the damper, and more noise "trapped" inside the box.
