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ss dave
01-10-2009, 09:03 PM
I recently changed in-tank pumps due to my Aeromotive A1000 starving the pick-up at low volumes. Went with a Bosch 330 pump. I have 44.5# injectors and Fast rails and run 58psi.
Now on acceleration 3/4 throttle with full tank I get a brief pressure fluctuation from 58psi to 52 psi. The motor doesn't nose over, I can't tell any change in performance. It is a parallel set up with the regulator behind the injectors.
Should I be concerned with a 10 percent drop? Is this normal?
My Aeromotive stayed rock-solid 58 psi, but of course it moved alot of fuel.

68Formula
01-11-2009, 05:02 AM
What's your injector duty cycles when it drops to 52psi?

ss dave
01-11-2009, 07:20 PM
good question, I'll find out.