NEW LOWER PRICE--WHILE SUPPLIES LAST!
Gold version sold out and discontinued--select from silver or black.
Ok, so tell me more about Sniper EFI
This should erase all doubts you had about EFI! Whether you were holding out because of price or difficulty of setup, the Sniper EFI system kills both of those tired old excuses. Now you can have all of the benefits of a high-end throttle-body EFI system without laptops, software, tuning, wiring harnesses, or even an ECU box. That's right--carburetor simplicity with crisp EFI functionality.
If you have an engine with a Holley 4150-style intake manifold then you are ready to start installing. Bolt on the throttle body, put the linkage in place, connect the power and O2 Sensor, provide an EFI fuel supply. All that's left is walking through the guided setup quiz (with not-so-tough questions like, "what is the displacement of your engine") and the ECU located inside the throttle body itself does the rest.
Features:
- Direct Fit for 4150-style Intake Manifold (adapters available for other manifolds)
- The ECU is in the Throttle Body--No boxes to mount, no complex wiring harness to run!
- Connect with as few as 4 wiring connections: Power +/-, Ignition, and RPM Signal
- Fuel pressure regulator and most sensors are built-in
- Visually amazing 3.5-inch touchscreen provides both setup and monitoring
- Self-tuning--no laptop or software required!
- Available in Shiny Metallic (550-510), Ceramic Black (550-511) or Classic Gold (550-516)
Now Available with the EFI System Pro Master Kit
Just after Holley introduced the Sniper EFI System they released their "Master Kit" version. By simply adding a 'K' to the end of the part number the EFI system would include absolutely everything the owner would need to install a complete inline EFI fuel system, including the pump, filters, 20 feet of Earl's Vapor-Guard hose, fittings, adapters, and clamps (see image below.) A great solution for many users.
Originally, Holley's master kit included the famous "Walbro" 255 LPH Fuel Pump manufactured here in the USA by TI Automotive. This pump flows enough fuel to support nearly 600 HP in naturally aspirated applications. It does not support E85 but other pumps are available to do that. At some point the decision was made to include a pump made by Airtex that produces less fuel flow. We realized that as TI Automotive distributors we could build our own master kit with the Walbro inline pump, and could, in fact, offer the customer a custom selection of fuel flow from their choice of three different master kits. Those kits are optionally available above.
*Note: While the GSL396 version of our Master Kit can flow enough fuel to support HP numbers in excess of 650 NA / 540 Boosted, these are the far limits of the four-injector version of the Sniper. Align fuel requirements and system capabilities very carefully to avoid engine damage.
Holley Sniper Laptop Tuning Software
Pardon us as we struggle to contain our excitement about the newly released laptop tuning software exclusively for the Holley Sniper EFI Systems! Hey, what you can access and control via the included 3.5-inch touchscreen display is very impressive. This added software is not necessary for the vast majority of Sniper EFI users. But there are a few folks out there who wanted full-featured tuning capability. Well, here it is!
What can you do with the laptop software that you can't do with the handheld? Well, you can tune your Sniper to work with boosted engines up to 1 bar of boost (using the 2-bar map sensor that came on the Sniper.) It is important to note that this software deviates from the basic concept of EFI for Everyman. While it is easy to add the USB Dongle, download the Sniper EFI Software, install, connect, and run, learning EFI tuning is challenging to say the least. But for only the cost of the dongle (the software is available at no cost) you can get started. And we here at EFISystemPro.Com are excited to guide you in your learning.
Recommended With your Sniper EFI System
- You will need an EFI Fuel System. We have several solutions!
- We always recommend one of Holley's OE Style Fuel Modules if one is available for your vehicle.
- A complete EFI Fuel Tank System is also a great choice.
- If no OE module or complete Tank solution is available for your vehicle but you still want the benefits of an in-tank pump then one of these Retro-Fit Fuel Tank Modules is the right answer.
- If you have a racing fuel cell with a 6- or 12-bolt flange around the filler neck then one of these Fuel Cell Tank Modules is ideal.
- The Master Kit with inline fuel pump continues to be the most cost-effective and universal solution. You can choose that when you add the EFI System to your cart, above.
- You absolutely will want a Fuel Pressure Gauge. Those who don't install one with their EFI system are invariably the ones who end up needing it. Don't be that guy!
- The Sniper EFI System has the capability to control ignition timing in addition to providing fuel injection. If you choose this then we recommend you upgrade to the HyperSpark Distributor System.
For more Sniper EFI System upgrade and replacement parts browse our entire selection of Sniper EFI System Components!
A Note About Express and International Shipping
Because of the way that Holley created the retail
packaging for their Master Kits it more than doubles the size of the
box. Although the Master Kit itself only adds 4 lbs to the weight of
the shipment, the shipping company charges based on increased size.
Therefore, as a service to our customers who request express and
international shipping of their Holley Sniper EFI Master Kit, we will
reduce the size of the shipment by removing the master kit components
from their retail packaging. The reduction of shipping cost is
automatically reflected in your shopping cart. If you need your
express/international shipment to include the original retail packaging,
please notify us and we will be happy to do so at the higher cost of
shipping. Ground shipments are free, of course, and will include the
original retail packaging.
Everyone says, "Buy From EFISystemPro.Com". Why?
When you buy it here at EFISystemPro.Com, that means we're on standby to answer your questions. Our level-3 tech support will gladly talk you through any challenge--just try to get that sort of personal service from a big-box auto performance store! Because here at EFISystemPro.Com, our look is high-end professional, but our service after the sale is home-town helpful!
Don't Miss This! FREE Sniper EFI T-shirt with every Sniper EFI system purchased from EFI System Pro!
This T-shirt is yours for $0.00 with your Holley Sniper EFI System purchased from EFI System Pro. Simply choose between Black and Dark Gray and designate your T-shirt size in the dropdown when adding the Sniper system to your shopping cart.
CLICK HERE for T-shirt product page
Watch This Great Video On The Sniper EFI System 4150
Not Sure? Review this product documentation before you buy!
Owners & Installation Manual
Holley Sniper EFI System
| ECU | |
| Boost Control | No |
| DIS Outputs | None |
| Family | Sniper |
| Fueling Strategy | Speed Density |
| Includes Power Harness | Yes |
| Injector Drivers | Four |
| Internal Datalogging | No. All datalogging done via external CAN bus device such as 3.5-inch handheld (included), laptop software, or digital display. |
| Knock Control Channels | 0 |
| Nitrous Control | Yes |
| Number of Cylinders | 8 Cylinder (Even Fire Only) |
| User Configurable I/O | Yes |
| User-Selectable MAP Storage | No |
| Water-Methanol Control | No |
| Displays And Controllers | |
| Auto Brightness | No |
| CAN Bus Capable | Yes (Specific to Holley ECUs Only) |
| Case/Bezel Finish | Black |
| Configurable | Monitor dozens of pre-configured metrics provided by the ECU, including sensors, air/fuel ratio, switched outputs, drive-by-wire data, and more. |
| Data Logging | Yes |
| Display Type | LCD |
| Functions | Setup, Monitor, Tuning |
| Gauge/Display Size | 3.5 Inch Rectangular |
| Internal Storage | Yes (SD Card) |
| Touchscreen | Yes |
| Throttle Bodies | |
| Airflow Rate (CFM) | 800 CFM (at 1.5 Inches Hg) |
| Barrels (BBL) | 4 |
| Gaskets Included | Yes |
| IAC Motor Included | Yes |
| Injectors Included | Yes |
| Style | Throttle Body Injection |
| Throttle Bore Diameter (ea) | 42.86mm |
| TPS Sensor Included | Yes |
| Fuel Injectors | |
| Flow Rate (Lbs / Hr) | 100 PPH |
| Fuel Pressure Regulators | |
| Pressure Range | Set (58.5 PSI at idle) |
| Rebuildable | Yes |
| Style | Integrated in Throttle Body |
| Fuel Pumps | |
| Flow Rate (GPH) | Master Kit Only: 67.4 GPH (w/526-5 and 526-7 version). Flow rate of 526-8 is significantly less. |
| Flow Rate (LPH) | Master Kit Only: 255 LPH (w/526-5 and 526-7 version). Flow rate of 526-8 is significantly less. |
| Fuel Type | Master Kit Only: Gasoline or E85 |
| Fuel Filters | |
| Element Material | Master Kit Only: Paper |
| Filter Type | Master Kit Only: Inline |
| Micron Filtration | Master Kit Only: Prefilter: 20 Micron / Postfilter: 10 Micron |
| Mounting Bracket Included | Master Kit Only: No |
| Outside Diameter | Master Kit Only: Prefilter: 1.94 Inches / Postfilter: 2.17 Inches |
| Harnesses | |
| Harness Type | 7-pin Power/Ignition/Fuel Pump, 10-Pin I/O, Wideband O2, Coolant Temp, CAN Bus (All fixed to Throttle Body) |
| Terminated | Yes |
| Crank Timing | |
| Sensor Harness Included | No (Ignition Adapter Only) |
| Sensors | |
| Type | Air Temperature, 2 BAR MAP and Throttle Position (Integrated in TB); Coolant Temperature, Wideband O2 |
| General | |
| Also Included | 3.5-inch Touchscreen Display |
| Application | Universal (Requires intake manifold for square bore carburetor or adapter there-to) |
| Color | Shiny Metallic (550-510) or Ceramic Black (550-511) |
| Emission Code | 3 |
| Unit of Sale | Kit |
Sniper EFI System 4150
Connector Harness, Sniper EFI to Holley Dual-Sync Distributor
If you are using a Holley Dual-Sync Distributor with your Sniper EFI System this adapter harness mak..
$45.50 $40.95
CAN-To-USB Dongle
Did you know that you can unlock even more tuning capability in your Holley Sniper EFI System? ..
$82.06 $73.85
Earl's O2 Sensor Weld-In Bung
Ok, so those clamp-on style O2 sensor bungs are cool if you are doing a quick installation and don't..
$9.14 $8.23
10-Pin Connector Kit for Sniper EFI 10-Pin Harness
This 10-pin metripack connector kit lets you create your own custom wiring harness for your Sniper I..
$27.10 $24.39
Clamp-On Oxygen Sensor Bung
Just because you're a decent mechanic doesn't mean that you have a degree in welding--nor does it m..
$47.09 $43.00
Rotor Phasing Kit for Sniper Ignition Control
ECU-controlled ignition timing control is far superior to standard mechanical and vacuum-based ignit..
$62.58 $56.32
EFI Master Fuel System Kit
This is the exact fuel system kit included with the self-regulated Sniper EFI System Master Kits but..
$434.00 $389.95
Connector Harness, Terminator EFI to Holley HyperSpark Distributor V2
The new Holley HyperSpark was designed to work with the Sniper EFI System with no adapter. But..
$32.73 $35.82
Dual Tank Fuel Pump Kit
When upgrading vehicles with two fuel tanks to EFI a challenge is immediately encountered: Not only..
$321.74 $292.49
Hyperspark Plug and Play Main Harness
Looking to wire your Holley Sniper and Holley Hyperspark ignition system? With only four flying lead..
$295.84 $268.95
