Turbocharger Compressor Calculations

[Vacuum 6]

http://www.gnttype.org/techarea/turbo/turboflow.html

Per this write up what does it mean on page 6 under the "Here's how to read the graph" section...Their (Turbonetics) standard tempature is 545 deg R?

[Ormand]

In the equation that goes with the Turbonetics graph, the factor inside the square root sign is air in temp/545. That means that Turbonetics based their graphs on a temperature of 545 degrees R, or 85 degrees F. If you are trying to use their compressor map, and you have a flow which was measured at a different temperature (70 F in the example) you have to adjust your flow using the equation provided in order to find the right point on the graph.

[kenmosher]

A little off topic, but Ray Hall has a free turbo calculator that even plots on compressor maps. Pretty neat little tool ... I've attached it here.

[Vacuum 6]

Where can I get the Buick Garrett turbo maps at?