Im just wondering, if the revs are hunting on idle is a good thing for the engine? (sounds cool though, rotational idle lol) Would this happen cause the timing is overly advanced. I got told by a tuner that the power fc comes stock with advanced timing roughly 20 or 30+degrees to suit Japanese conditions. I also did get bad knocks, worse one was roughly 100knocks. Dont know if its true but stock ecu is back in and my timing is true too with no misfires. Took the power fc out just to play it safe for now as i dont have money to get it tuned.