Also dry nitrous systems work great. They pressurize the float bowl to meter extra fuel to compensate for the nitrous. Once it's dialed it's safe. There is also a new setup that uses the vacum from the nitrous to pull the fuel in with the nitrous. It's kind cool because it eliminates the need to run race fuel all the time. It has a separate small 1 liter tank that it pulls the fuel from. So you just fill that with your need octane level and it is only used when nitrous is flowing