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Thanks very much, I'll give it a try! One more question, I'm seeing some knock at very low load around 2000-2500rpm. I've pulled timing and it is still present. Do you think I need to be very worried or do you think it's phantom noise. The car has race header and full exhaust so it is a little noisy.

Hi,

I'm wondering what else factors into the ECU pulling ignition. I've zeroed all the negative values in the knock limit tables but my logs show that the ECU is still pulling timing and I don't know why. Any feedback is very much appreciated.