tuning problem

[svnmpwr1990]

i need help tuning my car i have a wideband and a afc neo but before i got the neo the wideband was reading 10.0 i tried to lean it out but it starts to ping or detonate at about 10.5 i would like to get this to about 11 i am also running 15 psi but want more but cant get it because of detonation and i also run 92 octane

here are my mods

lexus afm, rc 550s, 57trim ct26, aeromotive fpr, afc neo, stock intercooler, Trust sp1 turbo back exhaust

i ran a 12.8 @ 107 with this but i feel like i can get a little more out of this setup