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Description
Sniper 2 EFI Upgrade Kit w/ Regulator - PolishedSniper 2 EFI Upgrade Kit w Regulator Polished Supports Up To 650HP 3. 5 in. Handheld Monitor No Fuel System Overview Holley's Sniper EFI is the absolute best way to upgrade your car to fuel injection with just 4 simple connections required. This 4 barrel system features a dual pattern bolt on design built to fit 4150 flange spreadbore manifolds. Sniper is designed to be installed at home in your garage or driveway with limited tools and the support of
Sniper 2 EFI Upgrade Kit w/ Regulator - PolishedSupports Up To 650HP - 3.5 in. Handheld Monitor - No Fuel System
Overview
Holley's Sniper EFI is the absolute best way to upgrade your car to fuel injection with just 4 simple connections required. This 4-barrel system features a dual pattern bolt on design built to fit 4150 flange spreadbore manifolds. Sniper is designed to be installed at home in your garage or driveway with limited tools and the support of Holley's comprehensive installation manual and videos. An afternoon in the garage and you will be enjoying improved engine performance, better MPG's and easier starting. Featuring a throttle body mounted ECU with no extra boxes to mount. Not exactly sure if you're going forced induction and/or naturally aspirated yet? No worries! This kit supports up to 650hp naturally aspirated and 575hp boosted with four 100 Lb/Hr injectors. After the simple installation it's time to let your Sniper begin the self-tuning process. Our user-friendly calibration wizard allows you to just answer a few questions about your engine and the system will begin self-tuning with no laptop required. You don't have to be a computer wiz or specialize in tuning to use a Sniper EFI system! Use the high resolution 3.5" full color touchscreen for tuning and gauge displays. Sniper EFI is part of a complete ecosystem! Your new Sniper kit pair's seamlessly together with Holley's Sniper Hyperspark Ignition, Fuel System's, Air Cleaners, Throttle Body Digital Dash to unlock the full potential of your build. Complete your fuel injection journey by checking out our full offer of ignition, fueling and accessories!
Features:
- Main Features
- Update your Sniper EFI to the new, improved Sniper 2 in less than one hour!
- Eliminates the need to rewire your existing Sniper EFI installation - one step, plug and play upgrade to a Sniper 2 throttle body
- Improve your ride with the benefits of Sniper 2, including wireless connectivity (coming late 2023), smoother throttle feel, improved RF interference resistance, hidden wiring harness and more
- Four total kits available ???? polished and black, with or without external fuel pressure regulator (required for Sniper 2)
- Reuses existing coolant temperature and wideband oxygen sensors
- All new design ???? the #1 EFI Conversion just got better!
- Supports up to 650hp naturally aspirated or 575hp on boost with four 100 lb/hr injectors
- Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires)
- Redesigned throttle shaft and plate geometry for a smoother throttle feel
- Sniper 2 is Part of the Sniper EFI Complete Ecosystem
- Sniper 2 is compatible with the complete Sniper EFI Ecosystem that includes plug-n-play Hyperspark Ignition systems (coil, ignition box and distributor), fuel systems (fuel lines, fuel pump hangers), multiple displays and more
- Available with fuel system kits: that include an adjustable external regulator, fittings, and a 3?????? section of fuel hose, allowing you to easily mount your regulator in the engine bay
- Additional Features
- (NEW) Integrated transmission kick down provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
- (NEW) Hidden Harness??? wiring harnesses exits from the rear of throttle body for a clean appearance
- (NEW) Inputs and outputs consist of: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), and 1x Tach Output
- (NEW) Redesigned injector connector for improved reliability
- (NEW) Onboard contactless magnetic TPS sensor ensures an accurate TPS reading
- (NEW) Next Generation mil-spec style M8 positive lock connector for CAN1 and CAN2 provides the latest in CAN bus technology for a simple yet robust connection
- (NEW) Cast-in fuel crossover from the primary to secondary fuel rail
- (NEW) Sniper 2 throttle bodies are serialized in house, which provides each unit a birth certificate for an improved customer service and warranty experience in the event of any unit needing to be inspected
- Patent Pending
Details:
- CFM: 800
- Coast Guard Approved: No
- Finish: Shiny
- Flange Style: 4150
- Fuel Pressure: 58.5 PSI
- Fuel System: Master Kit
- Injector Size: 100 lb/hr @ 58.5 PSI
- Inlet / Outlet Size: 9/16-18 Female O-Ring (AN 6)
- MAP Sensor: 2Bar
- Max Horsepower Rating: 650 Naturally Aspirated
- Model: 4150 EFI Conversion Throttle Body
- Power Distribution Module: No
- Transmission: All
- User Interface: 3.5 in Handheld
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Best pillow!
Size: Standard (2 Pillows + 2 Protectors), Style: Medium, Configuration: Pillows + Protectors
These are the most comfortable pillows ever. I would recommend going with the medium fill.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
So comfortable!
Size: Standard (2 Pillows + 2 Protectors), Style: Medium, Configuration: Pillows + Protectors
The best pillow I've ever gotten. I always slept on two pillows and now I only need this one.
The height is perfect and it is so comfortable. I highly recommend this pillow for people like me
who could never find the right one.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Feel like I am in hotel
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
These pillows are absolutely amazing! They feel just like the luxurious ones you find in high-end hotels—soft, fluffy, and super comfortable. They provide great support for my head and neck, helping me sleep better every night. The white design is clean and classic, and they hold their shape well without going flat. I bought two and couldn’t be happier—worth every penny! Highly recommend for anyone wanting hotel-quality comfort at home.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Great set of pillows!!!
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
I ordered this set of two down alternative pillows to replace some older pillows, and I’m honestly really impressed with the quality.
Right out of the package, the pillows fluffed up nicely and felt soft yet supportive. They have that plush feel you want without being too flat or too firm, which makes them comfortable in multiple sleeping positions.
I’ve been sleeping on these for a bit now and they’ve held their shape well throughout the night. They provide good neck support while still feeling cozy, and I don’t wake up with soreness or stiffness.
What I like most is how breathable they feel compared to some other pillows I’ve tried. They stay comfortable without overheating, and the down alternative fill makes them a great option for anyone with allergies.
Overall, this set is an excellent value for the price. If you’re looking for soft, supportive pillows that feel comfortable and well made, I would definitely recommend these.
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Reviewed in the United States on February 10, 2026
★★★★★ 4
Great, soft, high-quality pillows, but too thick for me
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
This will be a brief review of my pillow journey. I tried a few of the most popular pillows, like MyPillow, Amazon Basics, bamboo/shredded foam, memory pillows, but my most common complaint about them were that they were all just too high and firm for me. I am a restless sleeper and alternate between back, side, and stomach sleeping, and I strongly preferred the stomach sleeper/flat pillows with a polyester fiber/down alternative filling.
Here's a ranking of my 4 top pillows:
Eversnug Adjustable Layer Pillows - (#1)
These were THE pillow for me. I had never heard of these pillows or the company, but I really like being able to adjust my pillow. These pillows came with 2 small, 2 medium, and 2 large pillows and 2 twin zippable pillow pouches. All of them were polyester fiber filled and somewhat flat and soft, but not lumpy. The pillows may not come the exact same sizes, but they are close enough for me. These are the pillows I ultimately decided to stick with, despite being slightly more expensive than the others at $50 for a set of 2 pillows.
Nappler Bamboo Shredded Memory Foam Pillow - (#2)
Before I found the Eversnug pillows, I was trying the adjustable bamboo shredded memory foam ones. These were my go-to whenever I was testing pillows I didn't like very much. The only downside to these pillows is that if you don't add enough filling, you could feel the edges of the shredded foam. Also, the "bamboo" cover was way too warm and the inner zipper would get too easily caught.
Amazon Basics Down Alternative Pillow - (#3)
I don't think I've ever been disappointed by an Amazon Basics product yet. These pillows were soft, amazing pillows, but they were 1-2 inches too thick/firm for me.
MyPillow - (#4)
Despite all the hype around these, they were too lumpy and 1 inch too thick for me.
Like I said previously, I ended up going with the Eversnug Adjustable pillows, which I absolutely adore. A tiny bonus is that you can take the pillows you don't use and rest them on your sides or between your knees for some extra cushioning.
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Reviewed in the United States on July 12, 2023