Injecting prior to turbo comp' impellers

[NAnderson]

Digging this thread back up because it's quite interesting and informative.

This summer I'll be running a dual stage water/meth setup (1/3 water-2/3 meth) with one nozzle before the turbo, spraying directly into the compressor and one nozzle after the intercooler, spraying into the upper intercooler pipe. My question centers around the order of activation of these two nozzles. Should I activate the pre-turbo nozzle first (~15 psi) to cool the incoming charge and the post-intercooler nozzle second (~20-25 psi) to help with knock supression? Or am I thinking backwards on this? Any input or suggestions would be GREATLY appreciated.

I'm shooting for ~30-35 psi on a 2.3L (stroked 2.0L Mitsu 4G63) and would like to run 93 octane, but have access to 100 octane if necessary. I'd be glad to supply any additional info about the setup if it's needed.