timing question

[KillrV6]

does timing change o2 readings? like if i were to raise timing would it lean out my o2's?

also say you are runing 17 PSI of boost w/ 3 degrees of knock at WOT and 42 psi of fuel pressure w/ 720 o2's. what will happen to your o2's if you turn up the fuel pressure even more?

now i know that it would not stop the detonation doing and the only way to get rid of the knock would be better octane, or less boost. but i just want to know what would happen thats all...

thanks for any help as always
Evan S.