what should I set the fuel pressure to....

[Four62ci]

I have a 1990 GSX with a 2.5" cat back exhaust, tubular o2 housing, ported turbine housing, tubular exhaust manifold 255lph fuel pump and running 15 psi boost. Can someone tell me what fuel pressure I should set the AFPR to at idle with the vacuum hose attached. Also, at what point do I need to run a SAFC?

 

[DSM90AWD]

I have a 1990 GSX with a 2.5" cat back exhaust, tubular o2 housing, ported turbine housing, tubular exhaust manifold 255lph fuel pump and running 15 psi boost. Can someone tell me what fuel pressure I should set the AFPR to at idle with the vacuum hose attached. Also, at what point do I need to run a SAFC?

Set to 38psi without the vac line attached. A S-AFC is always a good idea as can "fine tune" specific RPM points to get additional milage/performance.

 

[Four62ci]

Set to 38psi without the vac line attached. A S-AFC is always a good idea as can "fine tune" specific RPM points to get additional milage/performance.

Thanks for the info.