Hey Matt, this is the time when I hate tunning cars,got to change one thing you said Matt, you did not ask to push it right to the limit, but we had not realy pushed it that far either, because of the fact you are in land, where bad fuel can end up getting into cars, we had almost enough Knock retard to pull the timing back to nearly zero, this power should not have hurt this motor, I hope we end up finding what has hurt it, I listened to the noise you sent me, a bit strange,very tinny, and to me almost sounds at a faster beat then the idle rpm. got to go to work now, keep in touch Matt. David