I replace the spark plug with a cold ones and the knocking disappear, But I still need to know the timing position recommended for that tuning, and if you add more fuel pressure how much, I have a Fuel pressure regulator and the gauge, it is on 32PSI.

If you put a aftermarket cam witch one do you recommend. But I know many D16Z6 with P29 piston running stock with out any problems at all. Just need to know the right setting. (spark plug, timing and fuel pressure)

Please advise. Thanks!