We've been spraying water methanol through superchargers such as Magnachargers, Eatons, Kenne Bells etc for years with no problems. Just take a look at all the Vette's with Magnachargers and Chevy Cobalts running water methanol injection. Their all spraying it right before the throttle body.
If you have any questions on water methanol injection let me know.
Rodney