Calculations for Required Fuel Injector Capacity

Babybenz

This is quite useful for selecting sufficient capacity of injectors for your modified car i.e. Eric's R32 project wow.

http://www.witchhunter.com/injectorcalc1.php4

Eric

I forgot the RB26 has 264/272 cam.

Babybenz

The calculator shows the same result as Eric's Tuner wow!

Horsepower (at the flywheel)   = 420
Number of Injectors    = 6
B.S.F.C. *   = 0.6
Max Duty Cycle in % ** 80%

Required Injector Static Flow Rate @ 43.5 psi  lb/hr = 52.5 lb/hr or 551 cc/min

古惑強

Big modifications = $$$€€€£££¥¥¥

Eric

My tuner will work on the max output based on the injector duty,
turbo, AFM used, intercooler and all other mods to determine.
As he suggested, with the 550cc injector + R34 turbo and R32
original AFM, max he can tuen to 420 to 450ps based on 1.2bar
boost.