I have the 25 lb/HR LS1 Take off injectors. What Fuel Pressure should I set my Regulator to to make sure the Flow Rating is Correct??

 

Apears those are the LS1 28.8# injectors (rated at 58psi), which have been re-rated to 25# based on the LT1's stock 43.5psi fuel pressure. First, confirm this with the person you bought them from. Then set it to 43.5psi, without the vacuum line connected.

 

I Bought them from SLP So I guess their Supposed to be 43.5, But I did'nt know to adjust with line Disconnected, Thanks