Holley EFI Fuel System Kit With Earl's Pro-Lite Fuel Line For Terminator EFI System

MSRP $1,139.00
You save 10%

Holley EFI Fuel System Kit with Earl's Pro-Lite Fuel Line for all Engines Equipped with a Terminator EFI System.

If you have recently upgraded your engine from the four barrel carburetor to one of the superb new Terminator EFI Systems developed and produced by Holley. Then you are going to need to take a long look at this expertly designed and crafted fuel system option, also developed by Holley. The newly available Holley (526-2) EFI Fuel System Kit with Earl's Pro-Lite Fuel Line was compiled for any engine that has been upgraded with a new Terminator EFI System.

Holley EFI fuel kits provide everything that will be required for a complete supply fuel system designed for use with the Terminator EFI. The kits have been engineered with the use of Holley's premium quality fuel pumps, fuel pressure regulators and fuel filters combined with the best of Earl's plumbing to bring the customer a fuel system tailored to fit the fuel supply requirements that your new Terminator EFI System demands.

Product Fitment:
- 1965-1985 Mustangs
- 1966-1977 Broncos
- 1960-1987 Chevy C10s

Holley EFI Fuel System Kit Includes:
- Earl's Pro-Lite 350 Fuel Hose (-6 AN Diameter, 20 ft.)
- Billet Electronic Fuel Pump – 65 GPH
- Billet Fuel Pressure Regulator - Adjustable from 40-70psi with Manifold Reference
- Two Billet Fuel Filters - 100 GPH 10 Micron & 100 GPH 100 Micron
- Swivel Seal Hose Ends
- Required Mounting Hardware and Brackets 

The equipment included in this kit has been carefully tested to ensure that it is the best collection of equipment available. The included Billet Electronic Fuel Pump and Billet Fuel Filters come out of the box ready to be installed and have markings that clearly indicate the direction of fuel flow on each piece of equipment. This simplifies the installation process by eliminating any guesswork as to which direction the pump or filters should be aligned.

The Billet Fuel Pressure Regulator can be easily mounted into position to regulate the amount of fuel moving through the line to the EFI with minimal effort, making your biggest worry where you're going to mount it on the underside of your vehicle. The included Swivel Seal Hose Ends have been designed to hold the ends of the twenty foot long, -6 AN Diameter Earl's Pro-Lite 350 Fuel Hose securely into place, letting you not have to worry about them becoming loose or losing their seal.

*Kits do not include hose from the fuel tank to the pre-filter or the return line from the fuel pressure regulator to the tank. This kit is recommended for pump or race gas use only. The included fuel pump is not compatible with E-85.

Tech Note: For a comprehensive instruction guide for this EFI Fuel System Kit (FP55), please see the PDF file in the lower section of this page.

Please Note: Holley also manufactures several EFI Fuel System Kits in addition to this one (FP54, FP56, FP57) to ensure that you can select a system setup that will correctly fit the needs of your particular application.

Purchase yourself a new Holley (526-2) EFI Fuel System Kit with Earl's Pro-Lite Fuel Line for your Engine Equipped with a Terminator EFI System from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Related Categories: Mustang Parts, Mustang Engine, Mustang Fuel Lines, Mustang Fuel Line Components & Hardware, Mustang Fuel Pressure Regulators

Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:

  • 1965 and older U.S. manufactured California certified vehicles
  • 1967 and older U.S. manufactured federally certified vehicles

Installation Difficulty


Advanced skill is required for this installation.

Installation Videos

Video Transcript

Bill: I'm sure many of you watching this are die-hard carburetor, but there is definitely something to be said for the benefits of electronic fuel injection. There's a reason Ford's been using it since 1986 ... Many of the reasons being drivability and cold start. Now why you may enjoy messing with the jets on your carburetor there's something to be said for getting in, turning the key and driving down the street. If you have a classic Mustang there's actually many ways to convert the fuel injection. One of the hottest systems right now is the EFI system from Holley. Today I have Rick in our studio from Holley. He is going to tell us about this system and tell us what you need to convert your classic Mustang to EFI. Rick, thanks for coming out.

Rick: Thank you very much.

Bill: Tell us about this system. What do we have here?

Rick: We've got the new Terminator kit. The Terminator kit is a TBI system. Works very, very easy for a guy replacing his carburetor. Basically you're going to bolt this carburetor on. You've got one plug in here. You have a plug into the temp sensor. Then you have a wide band that you're going to put in the exhaust. Then you have to have a place to put your ECU. The ECU is weatherproof so you can put it in the engine compartment if you wish to, so it really is a nice system.

Bill: So direct replacement for the carburetor ... Just unbolt your factory carb. This will fit any manifold, high rise, any style manifold out there?

Rick: It bolts onto a 4150 flange, so anything that a Holley carburetor fit onto, this will fit onto.

Bill: OK. And you said this could be mounted under the hood, inside the car, it doesn't matter. Anyplace you can put it as long as it's safe and protected to a point.

Rick: Correct.

Bill: How do you program it? How do you make it work? Give me some more details about it actually functions.

Rick: Very easy to work with. It comes with this little keypad right here. When you get everything wired up in the car and you turn the key on it's going to come up and ask you questions. It's going to ask you questions like what type of cubic inch you have. What type of camshaft you have. What type of ignition control you have. It is going to make the program for you.

Bill: So this isn't a system you have to install and take it to a local tuner and throw it on the dyno or nothing like that. You can do everything in your house by simply plug and play.

Rick: Correct. What it's going to do is after you get it on the car you're going to warm it up, get an operating temperature and go take it for a drive. You can feel it change as you're going. It's going to target the air fuel reading off the wide band O2 sensor. It's going to target that air fuel that it's looking for and tune your car for that application.

Bill: Now do you have to chose the air fuel that it's using or does it automatically pick the best one for your application?

Rick: When you're answering those questions it's going to basically do a calculation and do the best application for your, OK?

Bill: OK.

Rick: Now you do have some adjustability in that but most people never even go in and change them.

Bill: OK. And with this system here obviously there's a lot of different mustang engines the classics came with. It will work with any of them? Small block, big block ... No corrections there? No limits?

Rick: Correct. This will handle anything from down to probably as small as a 150 horses, all the way up to 600 horses.

Bill: OK. So this is good to 600. If you have a basic ... Say you put it on your 289 and next year you build a 302 or 351, this system can go with you and you're good to go. No changes necessary.

Rick: Correct. Sure will.

Bill: OK. Now to install this obviously we have the throttle body, the computer, the wiring. What else is necessary to put this on your classic Mustang?

Rick: Everything comes in one kit except for fuel system. We have quite a few different fuel systems to chose from, or if he's already got a fuel pump that's got a pump in it you can use that also. We chose our kit that we have over here. This does come with everything that you need except for return line. That is something that you have to purchase separately. They're designed separately.

Bill: So obviously this is a return style system. This system is going to give you your fittings, your pump, your filters, main feed line. Just add a return and you're ready to go.

Rick: Correct.

Bill: There's obviously several ways you can do a return on a classic Mustang. There are ways to do it with a factory tank as well which we are going to show you during the installation. Basically we have everything we need. Add the return line and we're ready to do an installation.

Rick: Correct.

Bill: All right, let's get started.

Rick: OK.

Bill: Before we get started tell us the basics of what we're going to be doing to install the Holley EFI onto our '70 Mach 1.

Rick: To start with we're going to take the shaker off the air cleaner.

Bill: OK.

Rick: Then we will replace with our TBI unit, the Terminator. When what we want to do is find a good place to put the ECU ... Depending on engine compartment or the interior. Then we're going to run our wiring system. Make sure it's done correctly as the instruction says and then we're going to have our O2 in the exhaust, and our water temp sensor in the intake manifold.

Bill: OK. We're going to show our viewers the basics of how to install this system. We're obviously not going to go into heavy detail on every nut and bolt. What would you say is an average estimated time to install this at home in your garage on your classic Mustang?

Rick: Depending on how nice they want to do the wiring. I give myself at least 6 to 8 hours. You can spend more time than that if you want to hide the wiring and make the wiring look really nice and put it away where you can't see it.

Bill: So this is something somebody could do over a weekend in their garage without any problem.

Rick: Sure can.

Bill: Park it carbureted on Friday. Drive to work Monday with fuel injection.

Rick: Sure can.

Bill: OK. Let's get started.

Rick: OK.

Bill: We are start off by removing the carburetor shaker and all the factory fuel parts, correct?

All right. So the carburetor is off. We're ready for the TBI then?

Rick: Yep.

Bill: Use the original hardware and bolt that down?

Rick: Yep.

Bill: Are there any modifications necessary to the factor throttle cable with this system?

Rick: Install that basically so we can hook it for exact same set up.

Bill: OK. Once that's bolted on then what's the next step?

Rick: Basically what we're looking at now ... What I usually chose is where to put the ECU.

Bill: OK. Rick, you said it was OK to mount this controller inside or outside. It doesn't matter where it goes?

Rick: Correct.

Bill: We decided to mount ours on a radiator support in front of our battery. A couple of reasons there. One, has to get 12 volts from the battery. It is a nice short run there. Two, it actually hides it nicely under the hood. Once the battery is back in place you won't see the controller at all. All the wires will drop down underneath the battery tray to make a nice clean installation.

We have our throttle body on. We've got our computer wired up. Well, mounted. What is the next step?

Rick: The next step ... You want to make sure these two main power wires that come off the ECU go straight to the battery terminals. That's very important. You don't want them to go anyplace else. They need to go to the terminals.

Bill: No starter solenoid? Nothing under the hood?

Rick: No.

Bill: Direct to 12 volt battery only.

Rick: Direct to 12 volt battery. Then your red and white is your key on switch. Then you also have a green that goes to your fuel pump. Then you've got a black, of course the ground; another red for power.

Bill: That black and red, are they switched or constant as well?

Rick: The red on here can be constant. But it also can be switched, either way. It doesn't make any difference there.

Bill: As long as the red and white goes to switch.

Rick: Correct.

Bill: And yellow?

Rick: The yellow wire is for a different application in the distributor. We will not use it in this application.

Bill: You'll need 12 volt switched inside the interior basically to trigger the system to turn it on. You want to make sure you're using a 12 volt switch that does have power when the car is cranking or it won't work properly.

So the wiring is done up top. We dropped the green wire down. This is going to go to our fuel pump. This is not a trigger. You can actually run the fuel pump directly off this wire?

Rick: Correct. The fuel pump that's in this is under basically 15 amps so that will take care of it. If you do anything over 15 amps for a fuel pump you'll want to put a relay on it.

Bill: I know the kit comes with a wide band. Where do we want to put that on this car?

Rick: Wide band is going to go into the header. I recommend the best is put it right in the collector. That works the nicest way to do. And that works really super.

Bill: Driver side, passenger? It doesn't matter? Whichever one is easier?

Rick: It doesn't really make a difference. It's designed to go on the driver's side but it doesn't have to.

Bill: OK. Show me what we're going to do with the tank back here.

Now what are we going to do at the tank with your new pump and new lines. How's everything going to work back here?

Rick: You're going to need to run a return line back and we'll use a bulkhead to go into that. We'll just drill a hole up here so we can slide this through and hold it in place.

Bill: Is the hole somewhere in here on the tank for the return line?

Rick: Yep. Sure would be. And then also when we mount the pump we want the pump really as low as you can get. We want it protected of course but you want it as low as you can get it so it is gravity fed as much as it can be.

Bill: That can come right off your factory pickup here.

Rick: Correct, sure can.

Bill: So the stock sending unit will work fine. No problems there. As far as it knows everything is staying in there. We're just adding the pump and line to it.

Rick: Correct.

Bill: Once we have the pump mounted on the back and the lines fished to the front we have to mount the regulator. You want to mount the regulator over towards the apron somewhere towards the shock tower area. You don't want on the firewall and you don't want to mount it to the engine itself. The base of the fuel line is going to go to your throttle body, out of that, into the regulator and that's where your return line comes off of. We mounted the bracket just underneath our shock tower on the apron in the backside of the passenger.

We have a return style fuel system installed. We've got everything plugged in, connected. What's next? How do we get this thing running?

Rick: Next, turn the key on and we'll program it.

Bill: All right, so it lit up which is always a good sign. What do we do from here?

Rick: Go down to wizard. Click on that. Start wizard. Calibration yes. We've got the Terminator. Click on that. That should be the correct part number. Click on that. I'd say this is under 400 cc.

Bill: It's a 351, yep.

Rick: Click on that. I forgot what type of camshaft we've got.

Bill: OK, so our cam being 230, you said street strip is the setting?.

Rick: Correct.

Bill: ECU control timing. In our case it would be no because of the MSG, correct?

Rick: Correct. We've got a CD box so you go down one. Push the button. That loads it up.

Bill: Load this file, yes?

Rick: Yes.

Bill: So now it's primed our pump. I hear everything happening up here so everything is turning on like it's supposed to.

Rick: Correct.

Bill: Press the button again?

Rick: Yes. Now we need to do TPS auto set.

Bill: OK. The ignition is on. Engine is not started so just hit start?

Rick: Correct. We're going to put the gas pedal to the floor twice.

Bill: OK. I'll let you jump in there and handle that for me.

Rick: Click on it.

Bill: OK. Now we're back to the start wizard.

Rick: OK. Ready to go.

Bill: Let's fire it up. Is it really that easy?

Rick: Yeah. One thing a lot of people forget. You've got to turn the key off and turn it back on.

Bill: OK. So make sure you turn the key off, and then back on to start it.

Rick: Yes. You ready?

Bill: Yeah. Start it up.

So the cold start was great. This car before ... the carburetor. You'd start it up you'd have to floor it a couple times, stay on the gas, keep it running. That time, key on, started right up. What's the process for learning now with the drivability on the car?

Rick: What you want to do is the next time he starts it up he needs to get it operating temperature, 160 degrees. They start learning at 160, OK. Then go take it for a drive. You want to drive it in all different types of load ranges. I mean drive it around town, drive it on the highway ... Any different types of load that you're going to do and really about 50 miles you feel it's just about done. You can feel a big difference. Then 100 miles it is pretty much finished but you're not going to feel much difference between 50 and 100 miles.

Bill: So once it does that it's learned and at that point you're pretty much ready to go with it.

Rick: Yep, sure are.

Bill: OK. The installation is pretty straightforward. It will take some time. It's not a one day job. Figure a good weekend. You'll be back on the road in no time.

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C10 years:

This product will fit the following Mustang years:

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