Why buy it here?
MISSION STATEMENT
Our mission here is simple: to build the most beautiful fuel injection systems in the world and to be the best at what we do. Whether we actually achieve that or not is ultimately up to you, not us. We can't say we're the best; everybody says that and it means nothing. We can only aspire to that level of excellence. You, the customer, are the final judge.
We're not a high-volume manufacturer and we're not a big company. We're a small custom EFI shop, more like an EFI "boutique" really, where every detail counts, and where every assembly starts with a clean sheet of paper to create an EFI to each customer's specifications. We don't typically have finished assemblies on the shelf ready to ship. Yours will be built exclusively FOR YOU.
PLEASE COMPARE US TO THE REST
There are EFI's offered today for $2500, and if you buy one, you'll get exactly what you paid for. They are completely made and assembled in Communist China, so you get a typical "Made in China" product. That alone should say enough about the quality. We don't consider those EFI's as our competition. They should be sold in flea markets. Do your homework. You can get more information on any company by putting their name into the search box at https://www.pissedconsumer.com/. You'll find all kinds of feedback about the EFI's made in China. Give it a try and see if you still want to buy one after reading about that company's products and their "customer service" (You will see their score as "82% UNFAVORABLE, 13% FAVORABLE). Still want to buy one?
A CUSTOMER-FRIENDLY EXPERIENCE
We understand that converting to an 8-stack EFI can be a scary project for the first-time EFI buyer who knows nothing about EFI. For that reason, every one of our units is shipped "ready to install", which means you will literally take it out of the box and bolt it on. We want you to focus on the startup procedure, not any prep work. All the sensors are tagged and labeled for you.
I assembled my startup manual from all the questions I've ever had to address over the years. Every time a customer called with a new question that wasn't already covered in the manual, I updated the manual to include that information. Eventually, my phone pretty much stopped ringing with tech questions. Our manual includes a comprehensive set of instructions, component specifications, important diagrams, a troubleshooting guide, and a reference for all the components we use. It's around 30 pages, and no other EFI company includes anything even close to it. It comes with every EFI using a Holley Terminator X ECU.
Some EFI's have a bad reputation, but the product itself isn't usually at fault. The main reason certain EFI brands get a bad reputation is a general lack of technical assistance or inadequate instructions. This is a highly technical product requiring in-depth technical information for a successful outcome. I make sure to provide that.
We've tried to think of everything to make our product the best choice and the most customer-friendly EFI available, and we constantly strive to be the high-water mark of our market.
Most companies are more focused on sales than support. We're EQUALLY focused on both. I want every installation to be a complete success. You can call me on my cell phone if you need help. If you require even more in-depth tuning or troubleshooting, we put you in the hands of our professional EFI tuner, Andy Starr of Starr Performance and Consulting. Andy can identify the source of virtually any problem, as well as set up your base calibration for you via remote or on-site tuning of your EFI, if you need him to do that for you. His prices are in line with the same rates you'd pay at a tuning center -- except you won't have to bring your car anywhere. He'll plug in remotely to your EFI computer and take over.
Here's his site: https://starrperformancetuning.com/
If you need a "plug-and-play" EFI package, our own plug-in fuel maps are available for popular Ford engines, and will be available for other engines as we develop them. Our 302/331/347/363 download delivers 475-525 hp, and our download for the 427W strokers delivers 540 to 580 hp. The horsepower you achieve will depend on factors such as your cam and cylinder heads, and our fuel maps can certainly be enhanced. All of our plug-in fuel maps were developed with real engines on the dyno, not by computer simulation.
Our complete EFI packages typically include a Holley Terminator X computer and a Holley EFI fuel pump. We're also specialists in EFI ignition systems, so when you place your order, part of our discussion will cover the ignition system you currently have and whether there is anything else you'll need. Our goal is to make the process as simple as possible and to be a single point of contact for EVERYTHING you'll need for a successful EFI conversion.
One of the features of the Holley Terminator X ECU is the ability to connect a laptop to go deeper into the tuning process. For this, you need Holley's USB/Can interface communication cable, part number #558-443. This doesn't come with the Terminator X, so we now also include this cable with all of our kits. We want this to be as easy as we can make it for you.
Two EFI types are offered in distinctly different throttle body styles. If you prefer the look of a classic Weber carburetion system, our Weber-type EFI looks just like Weber carburetors with hidden injectors and conventional fuel lines (instead of fuel rails common to EFI's). Our Weber-style EFI’s are so close in appearance and detail to actual Weber carburetors that it’s almost impossible to tell the difference. We take pride in the attention to detail on these Weber-style EFI units. They all have our own faux Weber I.D. plates and we use authentic Weber carburetor components to make them hard to tell from carburetors. Only the sharpest eye can detect the difference between our Weber EFI’s and Weber carburetion.
ORDERING:
The common question I'm asked is "I'm ready to order; what do I do next?" Step 1 in the process is for me to complete the build sheet for your assembly. We need to do this over the phone. I need to ask a series of questions to be sure every detail is covered. From the build sheet, we create your invoice showing the price of each line item and the total. This is emailed to you for your approval and the order is started with a 50% deposit. We accept many methods of payment.
All the details of our ordering process can be found on the CONTACT page of this website and will answer all your questions.
Here’s a side-by-side comparison showing our Weber carburetion system next to our “Weber” EFI. Can YOU tell which is which?
A closer look shows our Weber EFI on the right uses real Weber jet cover screens and the same type of fuel lines, carburetor screws, and brass top plugs as the Weber carburetors at the left. The only major giveaway is the lack of auxilliary venturi tubes inside the stacks on the EFI...but with a set of debris screens fitted inside the stacks, that missing detail disappears.
The FOR SALE page
From time to time, we have EFI's built ahead and available for immediate shipment. Anything like that can be found on our "FOR SALE" page. Be sure to check and see if anything listed there might meet your requirements. Anything listed there is brand new and available for immediate shipment.
State of the Art EFI
If you prefer the modern look of a state-of-the-art EFI system, our throttle bodies are the most beautiful in the industry. The unique threaded-in air horns completely eliminate the use of any screws for an exceptionally sleek and clean outer appearance.
We offer EFI systems for all the popular GM early engines and LS series, Ford 302, 351W, 351C, 427/428 FE, the Ford SOHC Cammer, Ford Coyote engines. The Chevrolet EFI's are available for smallblock, bigblock, and LS1, LS2, LS3, LS6, and LS7 engines.
Every EFI is custom-built to order. If it's your first EFI system, I offer a 100% complete package with everything you’ll need, which includes the fully assembled EFI unit ready to install, the right ECU for your specific application, a fuel pump, and an EFI-compatible ignition system, if you need one. All our kits come with my own 30-page instruction manual to guide you right through the setup process.
The photo above shows a smallblock Chevy conventional-type EFI with bright ceramic-coated manifold and black throttle bodies, which are both popular options. We can paint your throttle bodies in any color you wish. Just supply us with the paint code.
All sensors are tagged
Extra Detail
A close look at our Weber-type throttle bodies shows our faux-Weber data plate attached to the side and our use of genuine Weber 48IDA jet cover screens on top.
Other EFI companies may leave it up to you to round up all the sensors you'll need or they may supply them separately, requiring you to mount them. When your EFI assembly arrives from our shop, all sensors are mounted and labeled for you. We don't want you to figure out how to mount or identify any sensors. Our one goal is to make every installation a simple process whether you're an EFI beginner or a seasoned installer.
Our instructions provide all the information you'll need for setting up your EFI. It may surprise you to know that some EFI suppliers don't supply ANY instructions. My intention is always to make setting up your first tune as easy as I can for you. We also offer "plug 'n' play" fuel maps for certain engines that can be purchased and downloaded if you don't want to set up the first tune yourself.
If you're building a GT40 or a Cobra, we know authenticity is important to you. Our Weber-style throttle bodies now include our own "pseudo" factory I.D. plates for an even higher level of detail. These are exact copies of the I.D. plates that were on the earliest Weber downdrafts. If you blow-up the photo at the above right, you can see how authentic these I.D.tags are. Also notice that we install genuine factory Weber jet cover screens between the stacks. These are some of the details that set our assemblies apart.
I’ll put you into whatever engine control unit is best for your specific application. ECU technology is changing constantly and I do my best to keep changing with it. I supply and support Holley controllers because of their advanced technology and ease of use in comparison with all the others.
The right ECU is the key to any successful EFI installation. For instance, there are ECU’s made specifically for LS engines. and Coyote engines. These require very specific controls and the year of the engine sometimes makes a difference in which ECU to select. Sometimes there are different ECU's for different year engines.
In this industry, some ECU’s are self-learning; others aren’t. Some require a laptop and some don’t. I automatically assume you don't know anything about EFI's and that you'd probably like a self-tuning ECU with its own hand-held touch screen that leads you through the setup. That's the Holley Terminator X.
If you have an electronically controlled transmission, I'll provide you with an ECU that includes transmission control, or you may need a separate trans controller. I also sell a variety of fuel EFI pumps depending on what your application is.
I get asked about ignitions and distributors all the time. If you need me to select an ignition for your engine, I'll be happy to supply the matched components for a complete Dual Sync digital ignition package for your engine, including distributor, ignition box, coil, and wires.
Our goal here is to be the most customer-friendly EFI supplier in this business, so if you need us to supply everything you need with one phone call, we'll do that.
Again, all our EFI assemblies are shipped “ready for installation”. We focus on making every EFI package the most user-friendly and most complete EFI available anywhere. Please keep this in mind if you're pricing others, and be sure to ask if theirs come with every sensor properly mounted and labeled for you. It's an added-value feature, especially if you've never done this before.
PRICING
Our typical eight-stack fuel injection packages come in between $7000-$9000 including the computer and fuel pump. Individual pricing varies on each unit. Each EFI package is tailored to order so the component packages vary. For exact pricing, it's best to call or email me for an accurate price quote. If you email me, I will usually get back to you that same day.
HOLLEY PARTS DELIVERY
We are a Holley Direct Dealer, and all Holley parts are drop-shipped directly to you from Holley HQ's in Bowling Green, Kentucky. This cuts transit time way down and reduces the shipping charges to you. The Holley shipping will always be shown as a separate line item on your invoice. The only Holley parts shipped to you directly from us are for California customers.
HOLLEY SUPPORT
Terminator X software is available under the support tab at Holley.com or you can click on this link: https://www.holley.com/support/resources/#Fuel_Injection. Scroll down to find the Terminator X platform and click on the second line: Terminator X Software. Download the software allowing the program to make any changes to the laptop as prompted.
Some of Our Ford Offerings Are Shown Below
Ford 427 Cammer
As a Ford EFI specialty shop, we’re proud to be the only source for a Ford 427 SOHC cammer EFI. This EFI is the ultimate induction system for a cammer. We use 58mm throttle bodies and 64 lb Bosche injectors to support 960 hp (one of our customers acheived 966 hp at the flywheel / 865hp at the rear wheels with this EFI).
These come with everything, including fuel rails, fuel pressure regulator, and all sensors, which are tagged for you on all units.
Note: The cammer manifolds are produced in quantities of just ten manifolds per run every 2-3 years. We've been out of these manifolds since spring of 2023 and a new production run (of just ten manifolds) is on the way for January-February of 2024. Of those ten, we still have 7 manifolds available and not yet reserved. Pre-orders are advised.
Ford 302
Conventional 302 EFI with plain finish throttle bodies and short air horns.
427 Ford FE / Weber
427 Ford FE with Weber style throttle bodies in standard finishes and ceramic coated manifold. This was an earlier photo before we started having the Weber I.D. plates made. Now all the FE's have them, as seen in the 351C photo above.
Ford Coyote
Ford Coyote engines can be outfitted with Weber-style throttle bodies to give a vintage look to a state-of-the art engine. This one is the 10-degree angled version. We also offer it on a straight vertical manifold.
429-460 Ford
Ford 460 EFI in gloss black.
The 351 Cleveland is BACK!
The 351C manifold went out of production a while back, and now, after a long hiatus, we are finally able to offer it again. Our new 351C manifolds are much improved to include a collective vacuum chamber that enables us to build either Weber carburetion or EFI. And this new version comes in either a 2-barrel or 4-barrel port configuration. This manifold is only available with Weber-type throttle bodies, making it an ideal choice for Panteras, such as the Pantera EFI shown here. Seriously, if you saw this, would you be able to tell it's fuel injection? (One of our signature details is those 1965 Weber factory-style data plates).
Ford 351W
Our "base" 351W is pictured here, which includes our standard polished air horns and fuel rails...the EFI's most visible components. This shows our conventional throttle bodies, and these units can also be ordered with Weber carb-type throttle bodies. This unit has our 35mm "shorty" air horns, which are a no-cost option if you need additional hood clearance. These throttle bodies can also be ordered with 2", 3", and 4" air horns.
427 Ford FE with 58mm throttle bodies
The Ford 427FE conventional EFI is shown here. These come with huge 58mm throttle bodies and it's one of our lowest-profile assemblies. Look closely and you'll see this manifold also has nitrous oxide. If you want your EFI with NOS, let us know. This unit can produce 750 horsepower on a stroked FE.
Here's a better look at the NOS lines. On an EFI, only one set of injectors is needed to deliver the nitrous. When the NOS button is pushed, the EFI's computer delivers the extra fuel through the fuel injection unit. With just 8 lines, there is much less clutter.
GT40 and Daytona Coupe turkey pan option
GT40 and Cobra applications have always been our specialty with their various linkage requirements and other specific details unique only to those cars. If you have a GT40 or a Cobra Daytona Coupe, then you may want your smallblock Ford Weber EFI (or carburetors) supplied with a "turkey pan" as you see here. The assembly shown above replicates the original package as it appeared on the 1965 GT40 race cars. The reversion plate on top (not shown) is also an option.
As mentioned above, the Coyote units come in both vertical and 10-degree configurations. Shown here is our base Coyote EFI vertical unit in natural finishes with air horns not yet installed. There are various lengths of air horns available.
Chevrolet EFI Systems
Our Chevrolet EFI offerings range from the standard smallblock and bigblock Chevy engines to the LS series, with manifolds for LS-1, LS-2, LS-3, and LS-6.
Our base Bigblock Chevrolet EFI with conventional throttle bodies.
Shown here is a fully polished smallblock Chevy EFI with 4-inch tall air horns. We offer air horns in four sizes ranging from 1-3/8" to 4". Tags on the IAC and coolant sensor can also be seen in this photo. We install and tag all sensors for you here to avoid any confusion.
LS-3 with standard throttle bodies. We build EFI's for LS-1, LS-2, LS-3, LS-6, and LS-7 engines.
The LS-3/LS7 "Semi Crossram" is one of our most exotic EFI''s. This is the top of the food chain if you want to make a statement with a different look in EFI. The manifold is shown here in an optional finish to match the customer's car, with polished air horns and fuel rails, standard on all our assemblies. The LS3 semi-xram EFI's all come with bright-machined billet throttle bodies and valley cover as shown.
Screens and filters
Debris screens provide protection without effecting the visual beauty of the eight stack unit.
Individual stack filters can ordered with your EFI. These are custom-fit filters, made for our air horns by BBR, a leading manufacturer of individual stack filters.
BBR filters are custom-made to fit every type of air horn and they add very little to the height.
Jim,
What a wonderful piece of art you have sent, Thank you. The mechanic, machine shop and all friends are completely impressed. (as well as myself being very impressed)
Tim McMath
Just wanted you and your team to know the fuel Injection system you put together for us is more beautiful than I ever expected.
I am sure the performance will equal the attention to detail spent on this project.
Thanks
Bob Lima
We completed the install of the 8 stack system and it is running great! We put a basic tune in the Holley Dominator ECU and got it running. We were going to fine-tune it on the dyno but so far it is learning and improving with every drive. It gives me the instant start, good idle speed, and plenty of punch from a stop. I will let you know how it improves as it gets more data.
Bruce Conwell