Don't waste your time using any of the stock Chevy timing maps. To be honest, I know nothing about AMC engines and what they like for spark timing. My approach to this would be to do a Google...

Sorry for the delay just got back from a business trip and didn't bring my tuning laptop with me. Gonna try to cut to the chase...I opened two sessions of tunerpro and ran your logs side by side...

Sorry before I choke on my foot which adx you using? Assuming $0E???

Watching this log and the previous posted, something seems amiss. Take it you're not running vss as I don't see any movement for mph. Some have alluded that this pcm needs vss but I don't know what...

Thanx for the insight! Trying to keep this on topic, went back two weeks ago and watched some wot datalogs that didn't exhibit any knock retard in the 100kpa area, so two steps back (bin) compared...

I'm noticing the same spark retard in the same 100 kpa area usually when I stomp go pedal rolling or from a dead stop. Took some spark out in that area but won't know the results until next play...