...
Don't worry too much about knock counts.....worry about knock retard, which is when the ecm actually reacts to these events.
...and I misunderstood.
It's not actually retarding the spark? Just seeing random knock events?
That's a whole 'nother thing. And a lot less worrisome, to my mind, anyway.
Keep in mind that I've never done a tune for knock, or knock retard.
Most of my ignition tuning is done by ear. I crank it forward until it pings, and then back it off until it doesn't. Of course, that might be a bit difficult with DIS.
On that topic, I think the timing ring on my damper must have slipped, because the car is pretty gutless with it set to spec, using a timing light.
After doing that, I set it by ear, as above. When I checked it with a timing light, I had added a whole ten degrees to the "spec". Something doesn't smell right. But it runs good, now.