Recently discovered while changing out pipes that my bike did not have O2 sensors, no codes or engine light, and the bike ran strong, previous owner successfully eliminated the sensors. I also discovered that the map he was running was stock, and there was no fuel management being used, this explained my atrocious 10 mpg.

I have since installed an FP3 along with the pipes and wow what a difference, test rode for about 40 miles, (30 degrees here) and my fuel needle barley moved. My bike is now completely free of EPA management and i'm excited to get it to a good Dyno tuner.

 

Mine are plugged up, got them with my power Commander.