I've been playing around with Spark Advance on my truck, and I notice(in data logs) no matter what I do to B5101 lower or raise timing values, the cam Phaser B5154 always adds unwanted timing up to 10 degrees more than what i command in my High Octane spark table....which leads to Knock Retard!!! Would it be safe to ZERO out the cam phaser table and never have it add or subtract timing at all...In the summer i can trace the timing advance & retard coming from different table's CAM Phaser, IAT, ECT,...e.t.c. but right now in real cold weather the CAM Phaser is adding too much...
I always use 91 Octane & NGK-TR6/TR5 plugs....
Cl-MAF only...AFR is 12.6-12.8 under WOT