Doing a 250 not sure what to twist it to. It is stock bottom end.
Figure I may get 10 lbs out of it.
I have most of the turbo books also, but this was a link to an online site and you had to enter the boost you were whating to run.
Seems like the calculator was basically yellow on a white page?????
I noticed it didn't change the cfm required much (if any) for my application, may have for higher boost.