Fuel pressure change? - Ford Mustang Forum
 
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post #1 of 4 (permalink) Old 08-14-2011 Thread Starter
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Fuel pressure change?

Does anybody with the stock GT500 fuel system see fuel pressure change with boost? The GT computer doesn't monitor boost pressure so I was wondering if the anybody with a fuel pressure gauge has actually seen their fuel pressure go up with boost on their GT500. I have GT500 system on my GT but from what I can see it never wavers much sitting pretty constant at 40lbs.


Alex
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post #2 of 4 (permalink) Old 08-14-2011
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Yes it does... Not sure of exact numbers but I have a fuel pressure gauge on mine. Next time I drive it I'll watch for numbers. If I remember... doh ;o)


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post #3 of 4 (permalink) Old 08-15-2011
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It should increase 1PSI for every PSI of boost so the injector nozzle sees constant pressure.

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post #4 of 4 (permalink) Old 08-21-2011
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K drove the car around today... but I suck. I am modified. I have 72 pound injectors and a custom dyno tune*
with the stock pumps*, my bad. At idle it was about 30 lbs. driving at about 1800 rpms about 40 psi. WOT third gear to red line I saw 72 lbs.

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