i have lately been experiencing detonation when i go over 10 psi of boost, not all the time, but sometimes, my entire ignition system save the coil is brand spanking new, i have an intercooler sprayer that i run and it isnt necessarily hot when it does it, sometimes i can run as much as 20-22 psi detonation free but other time i have some detonation at 11-12 does anyone know what i should do/check as a preventative thing?