the ram air induction helps any bike after a certain rpm only.is more helpful in multi cylinders.yes smaller carbs help out in low rpm power but with rise in rpm u need better gas flow and small carb can't keep upto the engine suction.having a bigger pilot jet helps in low end but rash do u feel the transit to the main will be smooth if they r not matched properly?and the holes will help in clutch basket due to better oil flow as the clutch is a wet clutch system.
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\'87 High Torque RD 350B
in first gear,6000 rpm,whack the throttle.
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