Quote:
Originally Posted by semtex
They're backpressure tubes. They provide backpressure at low rpms, which aids with low-end torque.
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back pressure tubes? I would imagine those are more to achieve the right "exhaust note" rather then effect the overall velocity of the exhaust gases.
Correct me if im wrong here, but wouldn't narrowing the piping to increase exhaust velocity be more effective than adding "backpressure" tubes.