Originally posted by djtrickee

Originally posted by a_miller_76 a car audio cap would put out 14.4v, but I think the real issue is your relay or something. You shouldn't be getting a "major voltage drop" which would require capping it.

actually we all do. Its not that uncommon to get considerable variations across the fuel pumps voltage. Its the main reason I did the fuel pump re-wire mod and even with that I can still hear a difference across the primary and Hahn pumps when i do something in the car to stress the system, ie- turn on the carputer, turn on the headlights, turn on the A/C. etc...

I did not know that.