SKU: 46509482438

Holley Sniper 2 EFI Self-Tuning Fuel Injection System Master Kit # HO550-511-3PK

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Description

Holley Sniper 2 EFI Self-Tuning Fuel Injection System Master Kit # HO550-511-3PKFuel Injection Systems, Sniper 2 EFI, Self Tuning, Throttle Body, Black, 4150 Flange, 800 cfm, Fuel Pump, External Fuel Regulator, Kit Fuel Injection Style: Throttle body Fuel Injection System Type: Single 4 Barrel Throttle Body (4150 Flange) Maximum Horsepower with Gas: 650 Timing Control Compatible: Yes Power Adder Compatible: Yes ECM Included: Yes Self Tuning: Yes User Tunable: Yes Fuel Pump Included: Yes EGR: No Transmission Controller Included:

Fuel Injection Systems, Sniper 2 EFI, Self-Tuning, Throttle Body, Black, 4150 Flange, 800 cfm, Fuel Pump, External Fuel Regulator, Kit

Fuel Injection Style:

Throttle body

Fuel Injection System Type:

Single 4-Barrel Throttle Body (4150 Flange)

Maximum Horsepower with Gas:

650

Timing Control Compatible:

Yes

Power Adder Compatible:

Yes

ECM Included:

Yes

Self Tuning:

Yes

User Tunable:

Yes

Fuel Pump Included:

Yes

EGR:

No

Transmission Controller Included:

No

Metering Style:

Speed density

Intake Manifold Included:

No

Multi-Port Fuel Rails Included:

No

Throttle Body Included:

Yes

Throttle Body Mounting Flange:

4-barrel square bore

Venturi Quantity:

4

Airflow Rate (cfm):

800 cfm

Throttle Body Material:

Cast aluminum

Throttle Body Finish:

Black ceramic

Injectors Included:

Yes

Injector Size (lbs/hr):

100 lbs./hr.

Calibration Module Included:

Yes

Wiring Harness Included:

Yes

Oxygen Sensor Included:

Yes

Fuel Pressure Regulator Included:

Yes

Distributor Included:

No

MAP Sensor Included:

Yes

IAT Sensor Included:

Yes

TPS Sensor Included:

Yes

IAC Motor Included:

Yes

Quantity:

Sold as a kit.

Holley Sniper 2 EFI Self-Tuning Fuel Injection Systems

Holley Sniper 2 EFI self-tuning fuel injection systems are perfect for street rods, muscle cars, off-road trucks, or nearly any carbureted vehicle. They can put an end to cold start issues, hesitations, vapor lock, and flooding. The systems are available in standard tuning kitsor the Master kit that includes an external fuel pump. Choose from a polished or satin black finish on the throttle body.

Additional product features:

* Dual pattern bolt on carburetor replacement, designed to fit 4150 flange and spread bore manifolds
* Throttle body mounted ECU no extra boxes to mount
* Supports up to 650 hp with four 100 lb.-hr. injectors
* Only 4 wiring connections required (battery +, battery -, switched ignition, and RPM)
* Integrated ignition timing control and coil driver
* High-resolution full-color touch screen for initial setup, tuning, and gauge displays
* Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own); NO laptop required
* Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI
* Available in base and Master kits (Master kits include complete fuel system, consisting of 20 ft. of 3/8 in. vapor guard fuel hose, 12-920 fuel pump, filters, necessary hardware, and bulkhead fitting to return fuel into the tank)
* The included Genuine Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learn
* OEM-style TPS/IAC and fuel pressure regulator for years of dependable service
* Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with stainless steel T-bolt clamps and a stainless steel (weldable) oxygen sensor flange

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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]
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SKU: 46509482438

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4.2 ★★★★★
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T
Verified Purchase
Tjw
Omaha, US
★★★★★ 5
Important read!!
Format: Kindle
Love this and have recommended to many. Pushes against comfort zones. Necessary to read and adjust life! What would the world be like if we changed?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
M
Verified Purchase
M. J. Keel
Lowell, US
★★★★★ 5
Deftly weaving stories of her life into solid biblical teaching on love, grace
Format: Hardcover
The Gospel Comes With a House Key may be one of the most thought provoking books I have read in the last year (and I read a lot). It is part memoir, part biblical theology, part polemic about the use God wants to put our homes to. Deftly weaving stories of her life into solid biblical teaching on love, grace, mercy, personal sin, and, yes, hospitality Rosaria Butterfield kept me compulsively turning the pages. It’s not just that she is a deep thinker with a thorough grasp of how to convey ideas clearly and compellingly. She is an excellent story-teller who also is an excellent writer; and those two do not always go together. She drew me in to one story in particular that she did not finish until toward the end of the book, but rather than finding that frustrating it led me deeper into her broader story, and subtly, her broader argument that I need to radically rethink how I view my home and my time. After all it is all God’s and I am meant to find my ultimate joy in service to Him and in His love. Apparently my home can be a powerful tool for me to feel His love and to convey His love to others. Want to know exactly why? Want to see how that works out in the context on one family in one particular instance with broad application for all Christians? Then by all means I invite you to Butterfield home to eat with them, play with them, pray and read the Bible with them, to weep and struggle with them, just as they invite everyone they know to do the same. Thank you Rosaria. You’ve given me and my wife a lot to think about and a needed challenge; that actually looks like a lot of fun!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2018
M
Verified Purchase
Mark Baker
Fort Morgan, US
★★★★★ 4
Helpful Book
Format: Hardcover
Rosaria Butterfield shared her story of conversion in her memoir The Secret Thoughts of an Unlikely Convert. It impacted me so deeply. I couldn’t wait to get my hands on her second book, The Gospel Comes With A House Key. Rosaria Butterfield, former lesbian and English professor, converted to Christ in 1999. She is now a pastor’s wife, a homeschool mom, and a writer and speaker. In The Gospel Comes With a House Key, Rosaria addresses the topic of hospitality. For so many, the word “hospitality” is scary. We start picturing beautiful homes and Instagram-worthy charcuterie boards. But Rosaria says that biblical hospitality is a call to something different. It’s a call to so much more. Rosaria illustrates what ordinary hospitality looks like. She uses personal stories and life experiences to show how hospitality can be a lifeline for lost friends and neighbors. Her testimony becomes her ministry. Rosaria makes room at the table for all kinds of people: young or old, wealthy or poor. She talks to people who think differently and act differently than her. While reading through the book, the one question I had was about the abundance of personal stories. Yes, they added a personal touch and were quite powerful. But the sheer number of them overshadowed any biblical exposition of the theme of hospitality. A balance of story and exposition would have placed the spotlight directly on the work of Christ and opened up more possibilities for the reader to practice hospitality, even when it looks quite different from Rosaria. This mild quip aside, this book will be a breath of fresh air for Christians as they realize that their everyday messy lives can be shared with others. Hospitality isn’t about entertaining people. It is about using the gifts God has given us: our homes, tables, and lives to show an unbelieving world who Jesus really is. Hospitality shows a skeptical world what faith really looks like. Both of Rosaria’s books have expanded my thinking on hospitality, and I am so grateful she had the courage to share her story.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2021
L
Verified Purchase
L O'Connor
Chelsea, US
★★★★★ 5
The How and Why and Wow of Hospitality
Format: Hardcover
In a changing world where Christianity is losing credibility in so many ways, the only avenue for the gospel is quickly becoming authentic relationship. That's why when I saw this book, I could not order it fast enough. Rosaria comes alongside the reader and kindly and clearly walks through the multi-layered process of how to love a neighbor in this complicated society of ours. How does a relationship evolve from casual introductions while walking dogs to that same neighbor eventually crossing over the threshold and joining the family to eat a meal and linger long in conversation? Rosaria shows us how with compelling, victorious stories that underline what God does when we give Him room to work. By the time I read to the very last word of the Acknowledgements, I had been assured of the hope that nothing we do for our neighbors is wasted in the grand story God has for each of person involved, particularly if we don't give up praying, serving as opportunity arises, surrendering our reputations of association, and keeping our children in God's hands, not our own. Some reviewers said they didn't know what was so extraordinary about such a simple plan. This hospitality is extraordinary in two ways. First, the fact that she actually lives a lifestyle of hospitality to a wide variety of people is extraordinary in comparison to most of the rest of us. Second, such hospitality invites God to show up and what God does is always extraordinary. As much as I appreciate the book for showing me how to love my neighbor, what I love most about Rosaria is her repentant heart. One reviewer mistakenly said this book is about "Love the sinner; hate the sin." Rosaria specifically says, "...love the sinner and hate your own sin." (32) She is painfully aware of her own sin, repenting of it daily, as we all should be. Therefore, she does not see any distance between herself and any other image bearer of a holy God who also needs Jesus as much as she did. This fundamental biblical perspective allows her to draw near to all with the message of Jesus. He is all she has to offer. This is true for all of us, but Rosaria knows it. Rosaria is gutsy, brave, repentant and honest, and she practices radical hospitality with her neighbors daily. If you stare at verses like, ‘You shall love your neighbor as yourself.’ (Mark 12:31) and don't know how to live that verse out on a practical level, or if you stare at this incredibly changed world and no longer have the skill set to engage with it, this is the next book to read. © 2018 by Oaks Ministries. All rights reserved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2018
C
Verified Purchase
C Snaaps
Grantham, US
★★★★★ 5
Inspiring!
Format: Kindle
Rosaria’s hospitality is a hard act to follow, but her advice and examples give the inspiration to make a difference. May people find the Lord - know Him, know Him better - while sitting at my table.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026

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