Heavy spark knock and knock retard just started, Possible causes?

[Sledhead2]

My stock bin or computer is the BJYL, but I do not remember what the base bin was based on.

My base bin was created by a tuner whos main focus is LT1's. I got it about 4 years ago, it has taken me that long to get time to swap the engine. In that 4 years I have been reading a lot of stuff on gearheads pages and learning.

So if the PWM is not turned on does it let the convertor just go to complete lock up?, thus putting a larger load on the engine to soon?

I will update the base bin and burn it, and to a test log/drive

Thanks for your feedback Dave