fuel pressure rating on RC 550's

[blewbyu]

Does anyone know what the fuel pressure rating is on RC 550 injectors? I'm thinking that it is 20 psi but i'm not sure.

 

[NJGSX96]

If I remember correctly, mot injectors are low tested at 42psi.

 

[blewbyu]

so, if they are low tested at 43 psi, should there be a problem with me running 50 psi?

 

[IPT]

That depends on how much boost you are running. Because DSM's have a 1:1 Pressure regulator on them. They increase the fuel rail pressure 1 psi for every 1 psi of boost. So it you are running 20 psi of boost and you bump the base to 50 psi. When you come up on boost the fuel rail pressure will be 70 psi.

That seems OK. YOu do not want to get your rail pressure over 90 I do believe.

 

[BatmanGSX]

43.5psi.

 

[candela]

I just got my injectors from them yesterday. It shows what they were tested at which was 43 psi, and power levels at certain base specific fuel consumtions ( i think bsfc...), from .55 to .70