Question.. I have a 60-1 hifi whats the a/r ratio on this?..also is the compressor a/r .60? Also what are the +/- of using a larger or smaller a/r ratio on the compressor side?
Do you get faster spool up with a smaller a/r on the compressor side? and what about the size of the inlet, how does this affect performance?

 

I believe the hifi comes with a .60 a/r compressor housing....