Overview
Suit any Small Block or Big Block engine up to 600hp.
This is the Complete EFI kit. No other parts required*
Professional Products
Powerjection III
Complete #70026 Kit Shown
The EZ-EFI was originally rated at 500 HP but when they realized ours was rated at 550 they jacked the fuel pressure on their kit up from 45 PSI to 72 PSI which allows them to claim 600 HP. You can also raise the fuel pressure on the Powerjection III to achieve 600 HP as well.
*Retail price from Retrotek Speed website.
FAST EZ-EFI
Complete #30227 Kit Shown
This kit, as can be seen, has a mass of wiring, requires remote mounting of the ECU, and the O2 sensor bung has to be welded into the exhaust. Our kit features a simple clamp on bung and the ECU is mounted on the throttle body eliminating 80% of the wiring harness.
*Retail price from a FAST retailer. Price is $2,244.27 on FASTs own website.
This product is sold as a kit.
This is the Complete EFI kit. No other parts required*
Check out these sensational Powerjection III Features:
The Powerjection III is an amazing accomplishment in engineering. It is by far the simplest and cleanest afermarket EFI system available. Which also means it is the easiest to install and tune. The “Adaptive Learning” feature eliminates the necessity for laptop programming and tuning, except on the most radical engines. By “cleanest,” we mean it has minimal wiring showing, so for those street rod, street machine, and custom car enthusiasts who object to other EFI systems because of all the engine clutter with wires running everywhere, this is the system they have been waiting for.
And just because this is the simplest...as well as one of the least expensive aftermarket EFI systems...don’t consider it a cut-rate design with important features left out. First it utilizes a wideband O2 sensor, a feature missing from many competitive units. It also has a 2.5 BAR MAP sensor which means you can run up to 20 PSI of boost if you have a supercharger or turbocharger. The fuel pump comes with a combination heat sink and mounting bracket. The EMS (engine management system) mounts directly on the throttle body eliminating a major portion of the wiring required. This means you do not have to cut a hole in the firewall. Additionally the MAP Sensor is packaged into the throttle body which means one less component cluttering up your firewall and no vacuum hose needed to run from the firewall to the manifold.
Powerjection III Kit ContentsThe Powerjection III is an amazing accomplishment in engineering. It is by far the simplest and cleanest afermarket EFI system available. Which also means it is the easiest to install and tune. The “Adaptive Learning” feature eliminates the necessity for laptop programming and tuning, except on the most radical engines. By “cleanest,” we mean it has minimal wiring showing, so for those street rod, street machine, and custom car enthusiasts who object to other EFI systems because of all the engine clutter with wires running everywhere, this is the system they have been waiting for.
And just because this is the simplest...as well as one of the least expensive aftermarket EFI systems...don’t consider it a cut-rate design with important features left out. First it utilizes a wideband O2 sensor, a feature missing from many competitive units. It also has a 2.5 BAR MAP sensor which means you can run up to 20 PSI of boost if you have a supercharger or turbocharger. The fuel pump comes with a combination heat sink and mounting bracket. The EMS (engine management system) mounts directly on the throttle body eliminating a major portion of the wiring required. This means you do not have to cut a hole in the firewall. Additionally the MAP Sensor is packaged into the throttle body which means one less component cluttering up your firewall and no vacuum hose needed to run from the firewall to the manifold.
- 750 CFM Throttle Body Assembly (An exact swap for a 4150 Holley)
- Throttle Body and Air Cleaner Gaskets
- (4) 62 lb./hr. port style injectors
- Built in EMS (Engine Management System) Mounted on the throttle body
- Dashboard Software CD with comprehensive Instruction Manual
- All harnesses and connectors (Much less harnessing than other systems)
- Idle Air Control - Built in to the throttle body
- 2.5 BAR MAP Sensor - Built in to the throttle body
- Coolant Temperature Sensor - 3/8-NPT threads for most manifolds
- Throttle Position Sensor
- Wideband O2 Sensor and cable (Many competitive units are narrowband)
- O2 Sensor Bung and Clamps - No welding necessary for mounting
- 10409 Fuel Inlet Kit - Supplied with Basic Kit only
- 70041 Fuel Inlet Kit w/10671 EFI Regulator - With Complete Kit only
- 70051 EFI 220 L/H Fuel Pump - Supplied with Complete Kit only
- 70160 EFI Fuel Filter - Supplied with Complete Kit only
- 11113 EFI Fuel Pressure Gauge - 0-100 PSI - With Complete Kit only
- “Adaptive Learning” This means you install the Powerjection III EFI System, drive it around for a few minutes and it dials itself in. However, if you are the type who likes to do your own mapping, this system is laptop programmable and we show you how to do it with the supplied instruction booklet and CD.
- All of our Powerjection EFI Systems utilize a wide band O2 sensor. Why is this important? A narrow band O2 sensor, which is what come standard in most aftermarket EFI kits, is only capable of measuring the air/fuel mixture over a very narrow range. So if your particular setup requires a richer or leaner condition than what the sensor allows, you are stuck with what the sensor thinks you need. With the wide band sensor that we utilize, you can literally adjust your air/fuel ratio over an extremely wide range. So this is critical, particularly on a vehicle where your cam or compression ratio is such that you need a special air/fuel ratio for the car to run correctly. This is one of the main reasons that so many customers of competitive aftermarket EFI systems have so much trouble getting their vehicles to run properly.
- O2 sensors require a bung in the exhaust pipe. Other kits require you to drill a hole and weld in a bung. Our kit has a unique bung that only needs a 5/8” hole drilled in the exhaust pipe and then the bung is clamped to the pipe with two stainless steel clamps and a high temperature gasket. We have had these clamp-on bungs running on our test vehicles for nearly a year with no leaks. No welding is a real plus to simplify the installation. However the bungs are made of stainless steel and can be welded if desired.
- Our EMS (Engine Management System, or “computer” in layman’s terms) is a marvel of minaturizaton. It is so small that it is mounted right on the side of the throttle body. This means there is no loose box that you have to find a place under your dash to mount. No need to drill a hole through the firewall either for a bulky harness. In fact about 80% of the usual harnessing found with aftermarket EFI systems is eliminated with Powerjection III. And the MAP sensor, which with competitive systems usually mounts on the firewall with a vacuum hose running to the engine, is also integral with the throttle body. So another unsightly component is hidden from view and no ugly vacuum hose shows either.
- Despite the small size of our EMS, this is no cut rate system. Powerjection III is one of the most full featured aftermarket EFI systems available and our “Adaptive Learning” feature, is a huge technological advancement. Only one other manufacturer offers this feature and their unit is substantially more expensive than ours and still has a large, bulky harness and a remote mounted computer.
- Powerjection III has been exhaustively tested on four different test vehicles for well over seven months, running in all types of weather, temperature and elevations. The EMS has also been subjected to extensive lab testing to make sure that it is capable of functioning at typical underhood temperatures for extended periods of time.
Powerjection III
Complete #70026 Kit Shown
The EZ-EFI was originally rated at 500 HP but when they realized ours was rated at 550 they jacked the fuel pressure on their kit up from 45 PSI to 72 PSI which allows them to claim 600 HP. You can also raise the fuel pressure on the Powerjection III to achieve 600 HP as well.
*Retail price from Retrotek Speed website.
Complete #30227 Kit Shown
This kit, as can be seen, has a mass of wiring, requires remote mounting of the ECU, and the O2 sensor bung has to be welded into the exhaust. Our kit features a simple clamp on bung and the ECU is mounted on the throttle body eliminating 80% of the wiring harness.
*Retail price from a FAST retailer. Price is $2,244.27 on FASTs own website.
| Check out these important differences between the two systems: | ||
| Powerjection III | EZ-EFI | |
| OK to use with a supercharger or turbocharger | Yes | No |
| OK to use with nitrous | Yes | No |
| O2 bung easily installed with no welding | Yes | No |
| Throttle Body mounted ECU eliminates 80% of wiring | Yes | No |
| Electric fuel pump includes heat sink to keep pump cool | Yes | No |
| Looks like carburetor to maintain O.E. look | Yes | No |
| Uses OEM style high temp flexible wire sheathing | Yes | No |
| Can be used with points or converted points ignition | Yes | No |
| Requires an aftermarket spark box* | No | Yes |
| Will work with less than 8” of manifold vacuum | Yes | No |
| System fully tunable by end user if desired | Yes | No |
| Injectors spray above the butterflies** | Yes | No |
| Uses 2.5 BAR MAP sensor | Yes | No |
| Each unit fully tested on a running engine before shipping*** | Yes | ??? |
| Fuel automatically shuts off during deceleration for better mileage | Yes | ??? |
The handheld tuner provided by FAST only addresses three target points of air/fuel ratio tuning. The Powerjection III provides 81 target points. Three points is basically the same degree of control provided by a carburetor. While their system at first appears to be simpler to tune, the reality is that this is a very limiting feature. The fact that you can use a laptop if desired on the Powerjection (but not on the FAST system) is a major advantage for the user under certain circumstances.
*FAST says their system requires a clean tach signal and recommends using an aftermarket spark box such as an MSD or ACCEL to achieve this. This is not necessary with Powerjection.
**This is a critical difference and a patented feature of the Powerjection unit. Spraying above the butterflies provides superior idle characteristics.
***Each Powerjection III is set up and fully tested on a running engine before it is boxed and shipped out to our customers. The throttle plates and idle setting are fully dialed in so you can bolt it onto your engine and it will start up and run correctly right out of the box. We also confirm that the computer is accurately reading the wideband O2 sensor and the "Adaptive Learning" feature is fully functional.
This product is sold as a kit.
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Additional Information
| SKU | OLD-PP70026 |
|---|---|
| Sale Unit | kit |
| Legacy Part Number | PP70026 |