Originally Posted by esfourteen

Generally speaking, 11.3-11.8 is what most run with boost. apparently the widebands in the Z read 1 point richer in cipher so if you are looking at those you might see 10's.

As for the "riding" the knock sensor, are you asking how the ecu uses it in regards to timing? Our ecu will use a few sensors to determine if it can advance/retard timing, knock is one of them. If the ecu detects knock it will retard timing, but when you are making 500whp it cannot respond fast enough to realistically prevent damage. When people tune the Z using uprev for boost, they will retard the timing tables a bit to prevent the ECU from getting as aggressive as it does from the factory which is too much for boost.

Essentially this limits how far the ecu can advance timing, but it will still advance/retard timing within those limits based on IAT, knock etc.