Rail pressure erratic??

[snowman]

So when I'm cruising at road speed 60-70mph I find my rail pressure gauge moves. The needle moves from say 15,000 to 13,000. This is with my cruise on. I have isspro ev2 gauges. I don't notice any hiccups or anything else. Seems to drive fine. I only noticed it last year and to me it seems to have gotten worse. Anyone else have this problem??

 

[x MadMAX DIESEL]

Probably just how the tune is built? Flat land, or going up grades?

 

[DAVe3283]

That is very normal for a lot of tunes (including stock). It is often efficient to get a pulsewidth of about 500uS and vary the fuel pressure up and down to adjust the injected amount, rather than hold a constant fuel pressure and adjust the pulsewidth.

Nothing at all to worry about.

Sent from my Galaxy Nexus using Tapatalk 2

 

[snowman]

It's on flat. But at least that's good to here. I was just a little paranoid that's all. Thanks