Disabling the knock sensor is a great way to destroy your engine. If the PCM was pulling timing, it would pull more than necessary. You would not hear "ping" of course, but you would not have the power you want either.
I think if you actually HAVE advanced the timing by 5 degrees, the PCM is compensating.
At this point, I don't know what your goal really is, and I'm not sure PHP does either. You should not have to change the timing in a custom tune.
- Jack
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