How long is your piping from the compressor outlet, through the intercooler, all of the way to the throttle body?

I know that it sounds like an odd question, but I am trying to do a few calculations on the volume of the piping (which is why I need the length) and how many cfm a given turbo can flow. My thinking is that this info could be used to determine the appropriate sized piping, and also get an idea on the amount of turbo lag (not boost threshold) due to different piping sizes for a given turbo.

Any info/thoughts would be appreciated.