Hello,
I'd like to discuss two scenarios that I'm not sure if staged injectors are needed or not.
The first one is a C20XE turbocharged with a GT28RS, 9.5:1 C/R, stage 1 head running on E100, fully sequential. 360hp+ is the goal, and based on a B.S.F.C. of 0,91 I've calculated:
- 4 injectors: 992cc/min (94.5lb/h)
- 8 injectors: 496cc/min (47.25lb/h)
In case of going for big injectors, I have a few concerns:
- Would I have trouble setting idle, getting decent fuel economy and good emissions?
- I've found "Trick Flow 95lb/h" and "Standard Motor Products 96lb/h (on Racetronix website)" low impedance injectors. Are they the same injector (they look exactly the same). Are they good injectors?
Is there anything else to worry about?
In case of going for small staged injectors, I have a few concerns:
- How would be engine response when staging injectors?
- Is it better to use 8 equal size injectors or asymmetrical injectors?
Is there anything else to worry about?
The second one is VW Golg MKIII 2.0 8V turbocharged with a KKK16, 12:1 C/R, stage 1 head running on E100, fully sequential. 200hp+ is the goal, and based on a B.S.F.C. of 0,91 I've calculated:
- 4 injectors: 551cc/min (52.5lb/h)
- 8 injectors: 276cc/min (26.25lb/h)
This car will spend two hours a day on heavy traffic (!), and owner desires lowest possible idle rpm and the best possible low rpm driveability.
Too big injectors are not a problem in this case, as 52lb/h injectors are easy to find and "easy to idle".
Do small staged injectors give any advantage on these conditions?
Thanks and Best Regards,
Guilherme