I hate to spend a lot of time on this tune only to start over with a 2bar tune. The fuel trims are already pretty close and timing is pretty good.

 

Is it possible that the pushrods are too long 7.4's on ls7 lifters causing false knock , I know I should buy a length checker but some have gotten away with the 7.4's. It does have a pretty good amount of valvetrain noise but I attribute it to the dual springs. I also set up a config to log burst knock but I'm afraid to run it anymore on the 7.4's.