It's not whether or not the tubes are of equal length but how well the system - from intake, through filter, TB, manifold, cam timing, &c, to the exhaust tips - is tuned for scavenging. Google "exhaust scavenging" for more info.
Last edited by SouthArk370Z; 06-17-2016 at 12:45 PM.
Reason: Fixed some spelling and grammar
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