engine volumetric efficiency
 

anyone know the engine volumetric efficiency of a s5 13b turbo as i am looking at turbo flow maps and i need the know how many cfm the motor puts out the calculate the corect turbo size and trim

Uh, no you don't.

There are people out there who, through experience, can offer recommendations on turbo sizing.
Turbo sizing for a 13B is rather tricky, as I think you're trying to apply piston engine formulas for this which can be downright wrong.

If you can tell us your power goals, I'm sure we can recommend a turbo for you...


-Ted