This thread is a fishing trip for information and to share observations. Thanks for the responses.

Water/Meth is accepted at the track as long as it's a 50/50 mix or less. I'd trigger it at 10 PSI and a rate of 3 GPM to start and most likely 100% water as I'm running a touch rich already. A buddy of mine installed a Snow Meth injection kit on his E55, after the intercooler. Yep, he pulled it apart to get it as close to the exit from the intercooler as possible. He lost a boat load of power because no one locally could tune for the methanol.

Regardless, water/meth is in the thought stage. My next modification is fitting a high flow fan that I bought. 3300 CFM. What I want is to keep peak IAT's around 140º, not in the 170 to 180 range. If the high flow fan and some shrouding does the trick the injection idea will be unnecessary.

Les