I've not done a whole lot of tuning in the 2500 rpm/75+ mph range as I don't drive it very often.

This weekend, I drove to a buddies house about 45 miles away. On the way home, cruising about 78 mph is when I'd see knocks accumulating at a rate of the count increasing about 1 per second.

If I recall, BLM in the area in question is close. Wideband o2 sensor stayed pretty much around the .98 and 1.02 range.

As I was driving, and as knock count kept increasing, I dropped the areas where knock was occurring in the main spark table down 10 degrees and saw no change in the count increasing one per second. I also did not notice any change in how the engine ran.

Attached is the bin file and log for the 1228062 ecm.

One question that I don't recall was ever cleared up, is the knock count that is reported in the data stream 1 count per 1 detected knock, or, 1 count for every 256 knocks?

Thanks!