running raceflight bb 375, this copter is the most locked in tune I have gotten in a long time, I know a few have had trouble with bugs here and there but I got to say im in love, im running pids below stock, on MB 2206 2400 kv motors 4s, YOU must isolate flight controller on silcon washers, also some prop combos will add noise to gyro, so if u can only get tune 90 percent, try diff props that should help, any questions leave a comment for me, I left the motor noise so u can hear the tune, very little prop wash too.