Did some calculations today reguarding the 60mm SVT TB's i'm optimizing....
Stock SVT flow at 4000FPM velocity ~ 96.94 CFM
Optimized flow at 4000FPM velocity ~ 109.17 CFM
12.9% increase in flow volume
For refrence this gives the same results as bolting on a 63mm TB
If i've figured something incorrectly feel free to teach...i'm just starting to get into airflow calculations and the like in my spare time, learning whatever i can.