Stage 2 s/c?

[insane]

What is the # on a rotrex stage 2 mpi s/c? I did a search and their seems to be alot of confusing info. I am really try to find the maximum and minimum compressor rpm. I also am trying to find a good pulley combination for 12 psi at sea level with a cobra-head and a cold-air snorkel out throigh the hood.

 

[insane]

Seems to be a concensus on 120,000 for max. Looks like 1 to 1 will get me about 12-14 psi. I probably will start there. Well actually I have 26 and a 27 for pulleys. I will probably try that set-up both ways. Probably under driven because I have read and been warned that overdriving these for prolonged use isn't great for em. Thanks TY.