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Discussion Starter · #1 · (Edited)
So I took the perfectly good running 5.3 our of my 07 canyon and decided to put in LQ9 6.0 with torqstorm supercharger. I am having huge issues with fuel pressure. The injectors are FIC 795's, and I have changed the pump to Deatschwerks 400 LPH pump in the tank, 6an lines to new fuel filter to aeromotive boost referenced fuel pressure regulator. When I accelerate hard, fuel pressure drops like a rock, below 20.

I am running racetronix wiring harness to fuel pump. When I data log I am getting voltage drop to about 12.4 volts under hard acceleration. Is the voltage my problem?
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