Can somone help me understand what this compressor map means?

http://www.atpturbo.com/root/maps/im...8rcompress.gif

http://www.atpturbo.com/root/maps/im...28rturbine.gif

 

It's most efficient around 10psi of boost pushing 20lbs/min

pressure ratio = (14.7+amt. of desired boost)/14.7

 

with two of these turbos, what would be the max amt of boost these would be able to push on a 355 lt1? Im curious how much power these would be able to put out...

 

Max amount of air is ~70 lbs/min, which is about 760 crank hp. Assuming your redline is 6000rpms, it will require ~16-17psi of boost. Of course this is just an approximate, and at those PR's and flow rates you are pushing the turbos to the max and then some.

Jose