Quote Originally Posted by Scottydoggs View Post
scan your 02 sensor, it should be reading 930 MV ish give or take and lock in there wot. if it drops the fueling goes off and you get knock. lots of it.

had the same issue, was all set then it started getting kr for no reason, even dropped timing and it still knocked. finally noticed the o2 was dropping off to 0.79 wot.
Did your plugs show any signs of detonation when this was occurring?