Theoretically 80# 454 injectors @ 18 PSI will have a BPW of 115.

Theoretically 80# 454 injectors @ 13 PSI will have a BPW of 135.

Theoretically 74# 454 injectors @ 18 PSI will have a BPW of 124.

Theoretically 74# 454 injectors @ 13 PSI will have a BPW of 146.

Possibly update the BPW Constant vs. EGR vs. Air Flow Table with a Theoretical BPW?

http://www.gearhead-efi.com/Fuel-Inj...Information-85 Post #8 has a $85 VE Correction Table for TunerPro.zip file that can be very helpful for tuning VE tables.