Not sure if or why this would even be usefull to anyone, but if you are checking your fuel pressure, you need to make sure you let the car run for at least 15seconds before looking at the guage.

Just thought I would share a bit of random behavior I noticed.

 

yes, at start up it runs off of alternator power and then it goes to 10v, at least in my car, while idle. if you have the fans on it goes even lower. the question is, does it go up again to alternator power at wot? otherwise our wiring to our pumps suck! i'm installing a Kenne bell boost a pump this weekend to give my walbro 16.5 volts at wot and really get it flowing. i'll test the wire coming from the ecu too to see if the voltage goes up during wot.

 

It starts off at full voltage and full pressure to help deal with any possibility of vapor lock in the fuel rail.

 

thanks for the info !!!