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  • #31
    Use 100 before the pump.
    Use 10 after the regulator.

    The 10 causes the fuel to get aerated some times.
    In my neighborhood, if you open your hood to check your oil, and the vehicle still runs after you close it.......Then your labeled the Neighborhood Mechanic.
    https://forums.edelbrock.com/filedat...?photoid=42773

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    • #32
      Originally posted by BITE_ME View Post
      Use 100 before the pump.
      Use 10 after the regulator.

      The 10 causes the fuel to get aerated some times.
      I belive the sock on the pump is 100, so 10 micron AFTER regulator?

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      • #33
        Yes.....i was going to say sock or 100. There basically the same.
        In my neighborhood, if you open your hood to check your oil, and the vehicle still runs after you close it.......Then your labeled the Neighborhood Mechanic.
        https://forums.edelbrock.com/filedat...?photoid=42773

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        • #34
          Heres a Youtube video from todays driving with map 5037, it have not any learning time yet more than about a few minutes, you see a few minutes in the movie when i give it some throttle, fuel pressure drop and AFR lean, you can here the sound of engine to.
          https://youtu.be/ayidbrIw2Zk

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          • #35
            Agreed, you need to figure out the reason for the drop in fuel pressure.

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            • #36
              Originally posted by Mopar493 View Post
              Heres a Youtube video from todays driving with map 5037, it have not any learning time yet more than about a few minutes, you see a few minutes in the movie when i give it some throttle, fuel pressure drop and AFR lean, you can here the sound of engine to.
              https://youtu.be/ayidbrIw2Zk
              get the eledbrock fuel pressure regulator for the fuel rail it would fix this.

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              • #37
                Originally posted by fleet man View Post

                get the eledbrock fuel pressure regulator for the fuel rail it would fix this.
                Ok, yes its maybe the regulator, only loose pressure at accel. I thinking of the pump first, i run out of fuel one time on the road bec of a wrong showing fuel level gauge that show that i had fuel but doesnt, the tank was empty and i run/prime the pump dry once. But its running great otherwise, normal driving. By the way you had right about 5037 map, thank you.

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                • #38
                  Originally posted by Mopar493 View Post

                  Ok, yes its maybe the regulator, only loose pressure at accel. I thinking of the pump first, i run out of fuel one time on the road bec of a wrong showing fuel level gauge that show that i had fuel but doesnt, the tank was empty and i run/prime the pump dry once. But its running great otherwise, normal driving. By the way you had right about 5037 map, thank you.
                  thank you . this system is based on the gm t p i witch used a fixed fuel pressure regulator so you have full pressure and regulated on the return 17400 and 17401 one is 58 p s i check summit

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                  • #39
                    Originally posted by fleet man View Post

                    thank you . this system is based on the gm t p i witch used a fixed fuel pressure regulator so you have full pressure and regulated on the return 17400 and 17401 one is 58 p s i check summit
                    Thanks fleet man!

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                    • #40
                      Originally posted by Mopar493 View Post

                      Thanks fleet man!
                      your welcome and good luck

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                      • #41
                        Go back to 5029 MAP after you repair your Fuel delivery issue.

                        Take a 1 min or less video at idle/accelerating.

                        15 min videos , are too distracting.
                        Don't get too caught up in the numbers.
                        Just give the Engine what it wants &
                        Let the numbers be what they are.

                        Jim McFarland....

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                        • #42
                          Originally posted by 2700 Cast View Post
                          Go back to 5029 MAP after you repair your Fuel delivery issue.

                          Take a 1 min or less video at idle/accelerating.

                          15 min videos , are too distracting.
                          Ok, do you see something wrong with 5037 map? Otherwise 5037 suppose to match my size of engine and the vacuum the system reading, 14-15 hg/inch. I know i had 18hg/inch hot idle with carb and stock distributor 18 initial timing and full manifold vacuum bring the timing up to 30 at idle. This setup is something different but i have not check hot idle vacuum with a gauge on Pro flo 4.
                          Im going to try what fleet man sugested and regulate the pressure after the fuel rails, feed and return hoses should not be a restriction, AN 8 both. The pump is a Walbro dscc 39/50 400lph and should keep up well, i have be very meticulous with all the wiring and im using 10 gauge wires to the pump and its wired like instructions say with a internal diod 40 amp Bosch style relay and the voltage not go under 13,9 even during acceratate and 6,5 feet 10 gauge wires should not take away much voltage. Maybe something strange fault with the pump but i try regulate after fuel rail and put a new high flow 10 micron filter close the rails and maybe switch the pump to a new Walbro gst 450 pump, if this not help i dont know what to do.

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                          • #43
                            What is the Short fuel trim at idle with MAP 5037?
                            Don't get too caught up in the numbers.
                            Just give the Engine what it wants &
                            Let the numbers be what they are.

                            Jim McFarland....

                            Comment


                            • #44
                              I ran out of gas at a fuel station once.......it sputtered as I turned into it.
                              Put gas in it, and the fuel pump died at the pump....$250.00 tow bill, $187.00 fuel pump.

                              When I put the new fuel pump in the tank
                              I tweaked the sender unit so empty on the gauge actually means I have a little more 6 gallons in the tank.

                              The time I ran out of gas in the middle of the street, and at the same time the starter decided to pack in is a different story.
                              In my neighborhood, if you open your hood to check your oil, and the vehicle still runs after you close it.......Then your labeled the Neighborhood Mechanic.
                              https://forums.edelbrock.com/filedat...?photoid=42773

                              Comment


                              • #45
                                Originally posted by 2700 Cast View Post
                                What is the Short fuel trim at idle with MAP 5037?
                                Short ft at idle -1

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