The dynamic timing that Nissan uses on the 370z is extremely sensitive and makes changes depending on many variables (oil/coolant/air temps etc.) rendering timing changes in the positive to be unresponsive...the ECU determines the safest and most advantageous timing point with great accuracy!.....
as for other map choices...there are 5 slots available for maps....i usually only set 3 of them up in the power/valet/disable configuration.....
-Jack
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