MicroSquirt.com read only forum (Jan.15,2018)

BSFC is simply a measure of fuel usage. For our sake, don't worry about relating it to anything specific -- you just pick a number based on application. Turbo cars should pick something in the .60 range, typically.

Quoted from Edelbrock:
http://www.edelbrock.com/automotive/sport_compact/tech_1 ...

Its not that bad once you get past all the terms and numbers. Still doing the same old thing we did with carbs, just related to new words and digits. :)

Try this link instead: http://www.witchhunter.com/injectorcalc1.htm

Use the 2nd calculator down the page and you'll find the right size injector ...

1 bar = 14.5 psi. So 3 bar = 43.5 psi, 4 bar = 58 psi

Probably the first thing would be to get an estimate of your fuel requirements. Google for a "brake specific fuel consumption" (BSFC) calculator. Punch in the values for your setup, and you should get a recommended injector size.

Its ...

We used a set of Siemens Deka Hi-Z injectors on a T76 turbocharged V8, and they're running quite well. The flow rate at the 4 bar rail pressure is somewhere around 65lb/hr, I believe they're rated 57 or 60lb @ 3 bar.
Memory is failing me