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  1. #1
    Join Date
    Sep 2019
    Location
    Utah
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    59
    Country Flag: United States

    Need coyote swap advice.

    So, I am making a cougar with a 2015 coyote and mt81 manual trans. It is coming along nicely, (itís in the project forum)but I cannot find the answers to the many fuel system questions I have. I therefore come to grovel and beg those who have gone before for your pearls of wisdom. Letís begin:

    the ford control pack requires a return type fuel system, I have a return less I pulled from my organ donor. I have read that I can use a return type fuel pressure regulator, which I get but nobody can tell me, can I setup the mustangís stock pump to run at constant pressure and feed to the regulator and the engine?

    does anyone make a 55psi rated rubber hose?

    if I must run a aftermarket fuel pump, where can I get a good one (in line please) that can support the coyote and not cost a ton?

    how do I trigger the fuel pump ?(off ecu crank sensor, off ignition...)


    Thanks in advance!
    My cougar project.

  2. #2
    Join Date
    Nov 2006
    Location
    Mountain Springs, Texas
    Posts
    3,051
    Country Flag: United States
    Earls Vaporguard rubber hose is pressure rated.

    Carl at Vaporworx can help you with your pump and controller issues.

    https://www.vaporworx.com/product/fo...ontrol-system/

    Not sure why you would want to run an in-line pump with all the associated heat issues etc.

    Don
    1969 Camaro - LSA 6L90E AME sub/IRS
    1957 Buick Caballero - huge project
    1959 El Camino - Ironworks frame
    1969 Mustang Sportsroof
    1956 Cameo - full C5 suspension/drivetrain

  3. #3
    Join Date
    Sep 2019
    Location
    Utah
    Posts
    59
    Country Flag: United States
    That helps, thanks.

    To answer your question I have a fuel cell. If I can I would like to retrofit the factory mustang fuel pump, but I still have no idea if it can be converted to run return. If not i thought the simplicity of an external would be good. I did not know they were worse, I will need to do some reading on that.
    That booster is $500! I could buy a whole custom system for that much.
    Still I will call Carl, thanks!
    My cougar project.

  4. #4
    Join Date
    Jun 2010
    Location
    Deployed
    Posts
    2,889
    Country Flag: United States
    Quote Originally Posted by grambo View Post
    That helps, thanks.

    To answer your question I have a fuel cell. If I can I would like to retrofit the factory mustang fuel pump, but I still have no idea if it can be converted to run return. If not i thought the simplicity of an external would be good. I did not know they were worse, I will need to do some reading on that.
    That booster is $500! I could buy a whole custom system for that much.
    Still I will call Carl, thanks!

    I might be off my cracker here, but don’t restrict your self to “Ford”. The engine needs a specific PSI to run and it doesn’t have to be Ford nor do I see requirement to run a return system. I don’t see why you couldn’t use a vette style filter/regulator with your inline or in tank walbro. I agree Ricks and Vaporworks can set you up with tanks with fuel buckets that have built in regulators all the way to high flow modules that need to be controlled with a PWM.

    Is the Coyote fuel rail designed for a fuel return? Google shows me it’s exactly like an LS

    Almost all braided hose can be used with FI. I used Russell it in combination with SS hardlines
    1970 Camaro/DSE build


    Are you driver enough? Maybe....come on blue!
    https://www.pro-touring.com/threads/...71#post1147371

  5. #5
    Join Date
    Sep 2011
    Location
    Southern Ontario
    Posts
    637
    Country Flag: Canada
    You are using ford performance control pack or donor?

  6. #6
    Join Date
    Apr 2012
    Location
    Woodstock, IL
    Posts
    2,363
    Country Flag: United States
    Iíve used the Corvette fuel filter regulator on several Coyote swaps. The Earls vapor hose is good like Don suggested, uses pretty inexpensive fittings and easy to use.
    We usually use the Coyote control pack from Ford. It has a fuel pump trigger wire in it. Iíd assume the factory one would have that too, just have to find yourself a diagram.

    -Dale
    SchwartzPerformance
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  7. #7
    Join Date
    Dec 2009
    Location
    San Diego, CA
    Posts
    213
    Country Flag: United States
    Since you have a fuel cell, maybe Holley's pump will work for you. The trigger wire will come from the controls pack. I'd use the Earl's hose as previously suggested.

    https://www.holley.com/products/fuel..._pump_modules/

    Quote Originally Posted by grambo View Post
    So, I am making a cougar with a 2015 coyote and mt81 manual trans. It is coming along nicely, (itís in the project forum)but I cannot find the answers to the many fuel system questions I have. I therefore come to grovel and beg those who have gone before for your pearls of wisdom. Letís begin:

    the ford control pack requires a return type fuel system, I have a return less I pulled from my organ donor. I have read that I can use a return type fuel pressure regulator, which I get but nobody can tell me, can I setup the mustangís stock pump to run at constant pressure and feed to the regulator and the engine?

    does anyone make a 55psi rated rubber hose?

    if I must run a aftermarket fuel pump, where can I get a good one (in line please) that can support the coyote and not cost a ton?

    how do I trigger the fuel pump ?(off ecu crank sensor, off ignition...)


    Thanks in advance!
    Robert Icasas

    Projects:
    67 Cougar
    Art Morrison Sport IFS
    3-link Rear Suspension
    Coyote w/ D&D Performance Viper t56

  8. #8
    Join Date
    Sep 2011
    Location
    Southern Ontario
    Posts
    637
    Country Flag: Canada
    The fuel pump is triggered from the control pack. If itís a donor itís returnless if itís ford performance itís return type. Not sure if stock pump is good for return or not

  9. #9
    Join Date
    Jun 2001
    Location
    Los Angeles
    Posts
    5,570
    Country Flag: United States
    Sorry for the delay in getting to this.....

    Ford basically says to use a return system since there really is only one aftermarket returnless system: VaporWorx. We're a bit off of Ford's radar.

    The OEM system in the Mustang is returnless. The injector does not care if the fuel system is return or returnless. It just needs a sufficient volume of fuel at the required pressure.

    We have a Coyote specific kit that includes a stand-alone MAP sensor. it can be use with the Ford Mustang Coyote, ZL1, CTS-V, or Gen5 SS fuel modules with good results. https://www.vaporworx.com/product/fo...ontrol-system/

    VaporWorx. We Give You Gas http://www.vaporworx.com