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  1. R

    Question should I remove the top of AirBox lid?

    I have my 2020 RC390 w 1K miles on it. I'm amateur and use it for Florida Track Days. It is Stock and Has Power Commander V installed with Stock Exhaust, Stock intake map to compensate or correct the lean factory behavior. Should I open the Airbox lid to get better performance? I saw a video on...
  2. R

    Should I open the airbox?

    I have my 2020 RC390 w 1K miles on it. I'm amateur and use it for Florida Track Days. It is Stock and Has Power Commander V installed with Stock Exhaust, Stock intake map to compensate or correct the lean factory behavior. Should I open the Airbox lid to get better performance? I saw a video on...
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