Comments on my 340 plug under mag

340inabbody said
Other than some sort of knock sensor does a dyno have any way of detecting detonation? Or do you just have to check the plugs after a full pull?

There are knock sensors but they are pretty sensitive.

I just look at the plugs. I don’t even consider what the O2 sensor says until I look at the plugs.

If the plug says one thing and the O2 sensor something else, I believe the plug.