What pressure should we set our fuel at when we get our 26# injectors in? We currently have it at 50# with the crappy 24# injectors that are getting replaced. Please let me know because we want to do all of this at once. Oh and it is in a 5.9L TPI setup in a 92 Camaro.

 

Set to the factory spec 41 to 45 PSI. The compoter will correct the pulse width of the injector to get to the programed fuel mixture. Changing fuel pressure will not change the A/F ratio. You need to get the PCM tuned if you want a different A/F ratio. Actually, the A/F ratio will change temporarily with changes in fuel pressure, but the computer will eventually bring it back to normal.