Mercury 520 Performance upgrades
09-17-2016, 07:44 PM
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Mercury 520 Performance upgrades
Just bought a 2015 Formula with 520's. Looking to increase power and speed, who has made upgrades to there boat with these motors, and what were the results? Im thinking headers and or Whipple PCM, what else is out there, would like to here from those who have done upgrades. Lane
