What should i set my fuel pressure at?

95project · June 2nd, 2010, 12:23 PM

What should my FP be set at for:

Stock bottom end 5.0
AFR 185 heads
TR Track heat intake
75mm TB w/ 30lb injectors
76 MM MAF for 30lb'ers
MSD 6al, Dizzy, and coil
LT Headers, full exhaust
Custom CAM
SCT Tune

Will i miss the tune up by installing and setting my fuel pressure regulator? Thanks

93hatch · June 2nd, 2010, 12:28 PM

why would you install one if youre tuned?

95project · June 2nd, 2010, 01:00 PM

for some extra tuneability...this MF'n car is sensitive...they had some troubles tuning it right and couldnt get the fp to regulate correctly all the way thru the power band...picked up a kirban for cheap...i had hoped it would help dial it in more.. am i wrong in assuming this will help?

93hatch · June 2nd, 2010, 01:12 PM

My 3 tuned stangs have all been on the stock fpr so it always gets my vote

95project · June 2nd, 2010, 01:30 PM

any suggestion on what it should be set at?

93hatch · June 2nd, 2010, 01:40 PM

39 with the vacuum off

Trick Tuners · June 2nd, 2010, 02:02 PM

Originally Posted by 95project

they had some troubles tuning it right and couldnt get the fp to regulate correctly all the way thru the power band..

The fuel system is return style. There is no tuning involved with that. As long as the vac/boost line is attached to the regulator, the fuel pressure will be fine if there is enough pump capacity. If the pump is at max flow, adding an adjustable FPR will not solve the problem.

Uber88GT · June 2nd, 2010, 02:35 PM

Sounds more like a fuel pump issue than a FRP. Like mentioned above, 39psi but if the pump can't provide that, your hooped.

95project · June 2nd, 2010, 02:49 PM

Originally Posted by Trick Tuners

The fuel system is return style. There is no tuning involved with that. As long as the vac/boost line is attached to the regulator, the fuel pressure will be fine if there is enough pump capacity. If the pump is at max flow, adding an adjustable FPR will not solve the problem.

the fuel pump is the only thing not new in the fuel system...i will try your suggestion and see what i get...thanks guys.

June 2nd, 2010, 12:23 PM	#1
95project Enthusiast Join Date: Oct 2007 Location: Memphis TN Posts: 609 iTrader: 0 reviews	What should i set my fuel pressure at? What should my FP be set at for: Stock bottom end 5.0 AFR 185 heads TR Track heat intake 75mm TB w/ 30lb injectors 76 MM MAF for 30lb'ers MSD 6al, Dizzy, and coil LT Headers, full exhaust Custom CAM SCT Tune Will i miss the tune up by installing and setting my fuel pressure regulator? Thanks __________________ 95 GT- AFR 185's, Comp CAM, Trick FLow TH upper and lower, 30lb injec, 76MM C&L kit, Full MSD, BBK Pulleys, 3:73, BBK Long Tubes, X Pipe, Magnaflow Cat back, Cobra front control arms, MM CC plates LCA's and Panhard bar, tuned by Adam @ Pops Racing.

June 2nd, 2010, 12:28 PM	#2
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	why would you install one if youre tuned? __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

June 2nd, 2010, 01:00 PM	#3
95project Enthusiast Join Date: Oct 2007 Location: Memphis TN Posts: 609 iTrader: 0 reviews	for some extra tuneability...this MF'n car is sensitive...they had some troubles tuning it right and couldnt get the fp to regulate correctly all the way thru the power band...picked up a kirban for cheap...i had hoped it would help dial it in more.. am i wrong in assuming this will help? __________________ 95 GT- AFR 185's, Comp CAM, Trick FLow TH upper and lower, 30lb injec, 76MM C&L kit, Full MSD, BBK Pulleys, 3:73, BBK Long Tubes, X Pipe, Magnaflow Cat back, Cobra front control arms, MM CC plates LCA's and Panhard bar, tuned by Adam @ Pops Racing.

June 2nd, 2010, 01:12 PM	#4
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	My 3 tuned stangs have all been on the stock fpr so it always gets my vote __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

June 2nd, 2010, 01:30 PM	#5
95project Enthusiast Join Date: Oct 2007 Location: Memphis TN Posts: 609 iTrader: 0 reviews	any suggestion on what it should be set at? __________________ 95 GT- AFR 185's, Comp CAM, Trick FLow TH upper and lower, 30lb injec, 76MM C&L kit, Full MSD, BBK Pulleys, 3:73, BBK Long Tubes, X Pipe, Magnaflow Cat back, Cobra front control arms, MM CC plates LCA's and Panhard bar, tuned by Adam @ Pops Racing.

June 2nd, 2010, 01:40 PM	#6
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	39 with the vacuum off __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

June 2nd, 2010, 02:35 PM	#8
Uber88GT Regular 1988 Mustang GT Join Date: Oct 2009 Location: Edmonton, Alberta, Canada Posts: 456 iTrader: 0 reviews	Sounds more like a fuel pump issue than a FRP. Like mentioned above, 39psi but if the pump can't provide that, your hooped.

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