Just to start off I think this may be false knock because there is no way this motor should still be in one piece.
Basic run down it has Speed Daddy headers, no cat, MPS 3.4, 180 T-Stat, Thrasher CAI, and an old school 3800 performance tune.
Now for the knock:
Warmer Weather(70-80F)- 6-7 degrees of knock with timing between 6 and 8
Half throttle pull nets about 2-4 degrees
And now for the kicker:
Winter(35F)- 13.8 degrees of knock with WOT timing at 5
After the winter reading I don't see how it still runs so maybe it's false but regardless I need ideas as to what may be causing it or if it is in the tune. Added notes: fuel trims on torque stay negative no matter how many times I've reset computer and the car was decently abused before I bought it. Any help is greatly appreciated
