Adding a 4-1 Hindle, K&N filter and shimming the jet needle boosts horsepower:
The black line is with the "Y" air horn piece removed. Note the dip in the midrange...
dyno courtesy of Roy Richards
Roy Richards Slightly Modified Bike
Adding a 4-1 Hindle, K&N filter and shimming the jet needle
boosts horsepower:
The black line is with the "Y" air horn piece removed.
Note the dip in the midrange...
dyno courtesy of Roy Richards
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