Returnless Fuel Pressure

[toddyfiveo]

I was just wanting to see if anyone else has fluctuating fuel pressure like I have been having. Recently went from stock pumps and BAP to black306 pumps and modified FPDM with PPRV deleted. Seems like it started fluctuating after swapping the pumps out. Is a tune needed?

I tried uploading a video but it wont. cruising at 65-70 it will jump around from 5x-6x, sometimes dropping to high 30s. This is monitored from an aeroforce interceptor gauge.

 

[01yellercobra]

Are you watching Pressure Drop Across the Injectors or something else?

 

[toddyfiveo]

Watching the fuel pressure on an aeroforce gauge plugged into the OBD port. Not sure where the system pulls the pressure from. I have thought about getting a fuel rail gauge.


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[Fopar]

What blower are you running and how much boost?

 

[toddyfiveo]

Stegi ported Eaton unknown stage. Around 13-14 pounds


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[BLOWN9646]

Up the boost a few psi and get it tuned