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The Terminator
Engine/Tuning
Fuel system woes... Still dropping rail pressure w/new pumps
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<blockquote data-quote="04GTMustang" data-source="post: 16496653" data-attributes="member: 91468"><p>So this is logged with the PID "Pressure drop across injectors" which I believe is always supposed to show 39 psi, which it does at WOT (initially). I have a gauge in the car that measures FRP with a 1/8 NPT port right on the rail on the passenger side, and that does go up when you get into boost. I will take a look at that line regardless.</p><p></p><p></p><p></p><p>My 1/8 NPT sensor reads 50 psi at idle which is attached directly to the rail (and has no influence from a VAC line). It goes up with boost, that 39 psi I'm seeing on the log is from "pressure drop across injectors" which is supposed to read 39 psi all the time AFAIK.</p></blockquote><p></p>
[QUOTE="04GTMustang, post: 16496653, member: 91468"] So this is logged with the PID "Pressure drop across injectors" which I believe is always supposed to show 39 psi, which it does at WOT (initially). I have a gauge in the car that measures FRP with a 1/8 NPT port right on the rail on the passenger side, and that does go up when you get into boost. I will take a look at that line regardless. My 1/8 NPT sensor reads 50 psi at idle which is attached directly to the rail (and has no influence from a VAC line). It goes up with boost, that 39 psi I'm seeing on the log is from "pressure drop across injectors" which is supposed to read 39 psi all the time AFAIK. [/QUOTE]
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Fuel system woes... Still dropping rail pressure w/new pumps
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