Pay in installments of $374.99 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
HP EFI ECU & Harness Kits - 550-605NOverview: Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional
Overview:
Looking for a alternative for your stock or built late model factory FORD EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls for nitrous, boost or water meth.
Features:
- Optional 5.7” full-color touchscreen LCD allows easy on-the-fly tuning,data-logging or can be used as an easy to see graphical gauge panel
- Eight sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 16 low or high impedance injectors as a standard feature. Multiple staged injector strategies
- Eight channel Distributorless Ignition (DIS)outputs capable of directly driving “Smart” ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module
- Plug and Play control of factory GM 24x and 58x LSx engines
- Integrated single channel wide band oxygen sensor control. Works with NTK sensors
- Internal data-logging standard with a huge 2GB of memory
- 4 Stage progressive nitrous control
- Turbo boost control
- Integrated water/methanol injection control
- Self-tuning fuel table strategy greatly simplifies tuning process
- Individual cylinder fuel and spark control allows you to unlock your engine’s potential
- Works with 4, 6, 8 cylinder engines
- Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
- Advanced idle, closed loop, and enrichment strategies allow for very stable operation
- ECU is fully potted and can be mounted in the engine compartment or interior
- Sealed automotive and marine grade connectors
- Allows for use of common OEM sensors as well as customer sensor calibration input
- Ignition Plug and Play with GM 24x and 58x LSx engines, GM HEI, Ford TFI, magnetic and hall effect trigger, and other ignition systems. New Plug and Play applications in process. Custom settings can be configured to allow many other applications
- 1-5 Bar MAP sensor capability
- Two channel knock control sensor Inputs for both one or two wire knock sensors
- Dedicated fuel and oil pressure inputs
- Controls both stepper and PWM Idle Air Control (IAC) motors
- Speed density, Alpha-N, or combination fueling strategies
- 4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use
- 4 Stage nitrous oxide control
- Fully featured nitrous control eliminates the need for a separate nitrous controller device
- Can be configured “Wet” or “Dry” with closed loop feedback
- Progressive control based on time, RPM, or boost, requires part # 554-111
- Lean or rich safety cutoff
- Full timing retard/control configurability per stage based on RPM or time
- Integrated Water/Methanol injection control
- Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow
- Includes NTK Wideband Oxygen Sensor
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 3 |
| Ignition Type | Coil - (No Timing Control) |
| Ignition Type | Ford TFI |
| Ignition Type | GM HEI Small Cap |
| Ignition Type | Holley Dual Sync Distributor |
| Injector Connector | Jetronic / Minitimer (Bosch) |
| Product Type | EFI System |
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
4.8 ★★★★★
Based on 22 reviews
Sort
Product Reviews
★★★★★ 1
No recomiendo
Format: Paperback
Muy malo, no vine completo, además se demoró mucho más de lo que decía al momento de comprarlo. Solo aplazaban la fecha de entrega sin consultar cómo afectaba al cliente. Yo tuve que presentar el examen sin el libro, porque no llegó en la fecha que decía al comprarlo y después se cambió 3 veces la fecha, casi cumpliendo el mes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
★★★★★ 5
An absolute must for everyone dabbling with Unity 6 Game Development
Format: Paperback
Half of this book is about C# (until Chapter 6), and the other half is about actually making games. The book is very well written, and it is everything I needed to get a few problems solved with Unity 6 projects. I love how clearly things are explained, and the only thing I wish for is that I was able to spend more time delving into this while maintaining my financial status...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
★★★★★ 5
A Seasoned Developer's Fresh Perspective on Game Development
Format: Paperback
Finally, a game dev book that respects your existing programming knowledge
As someone who's spent two decades architecting enterprise web applications in C# and ASP.NET, I approached game development with what I thought was a solid foundation. I was wrong—not about C#, but about how differently it's applied in game engines. After five frustrating years of trying to bridge that gap through scattered tutorials and documentation, Harrison Ferrone's eighth edition finally gave me the structured path I needed.
What This Book Gets Right for Experienced Developers:
The pacing is deceptive. Yes, it starts with programming fundamentals, but don't skip ahead. Ferrone's approach to OOP in the context of Unity's component architecture was revelatory. In web dev, I'd been writing services, repositories, and dependency injection for years. Here, the MonoBehaviour lifecycle and component-based thinking required a genuine mental shift that the book handles exceptionally well in chapters 5-6.
Chapter 10's revisit of types and methods isn't redundant—it's strategic. By this point, you've written enough Unity scripts to appreciate why game code patterns differ from traditional enterprise patterns. The discussion of value types vs reference types hits differently when you're optimizing frame rates instead of HTTP response times.
The Unity 6 Update Matters:
Having struggled with outdated Unity tutorials for years, the Unity 6-specific content is invaluable. The screenshots are comprehensive (full-screen mode can make text small, but the GitHub repo and graphics bundle solve this). More importantly, the code samples reflect current Unity APIs and best practices, not deprecated approaches that still litter Stack Overflow.
Where It Shines for Career Transitioners:
Chapters 11-13 are worth the price alone. LINQ in Unity isn't just about querying collections—it's about performance considerations I never had to think about in web apps. The coverage of generics, delegates, and events finally connected how Unity's event system relates to patterns I already knew, but in a real-time context where every allocation matters.
The serialization chapter (12) bridged my understanding of data persistence from databases and JSON APIs to Unity's PlayerPrefs and ScriptableObjects. This practical grounding is what most tutorials skip.
Minor Quibbles:
The FPS prototype is solid for learning, but I wish there was more discussion of common anti-patterns experienced developers bring from other domains. I still catch myself over-engineering solutions when Unity's component system offers simpler approaches.
Also, while the book touches on performance, those coming from async/await-heavy web development will need supplementary resources on Unity's coroutines and the Job System for more complex scenarios.
Bottom Line:
If you're a professional developer trying to break into game development, stop collecting random Udemy courses. This book provides the structured progression and context-appropriate examples that respects your intelligence while teaching you to think like a game developer. The C# you know is necessary but not sufficient—Ferrone bridges that gap methodically.
After years of false starts, I finally have a working game prototype and, more importantly, the mental models to keep building. That's worth significantly more than the cover price.
Disclosure: I received an advance review copy from Packt Publishing. This honest review reflects my genuine experience as a career-changing developer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
★★★★★ 5
A Worthy Touchstone for Anyone Who Wants to Master Unity
Format: Paperback
Harrison Ferrone’s Learning C# by Developing Games with Unity 6 is one of the strongest beginner-to-intermediate Unity guides I’ve read: carefully structured, patient in its explanations, and quietly packed with insight about how Unity 6 and C# truly work together. I read the physical edition while sitting in front of a blank Unity project, and the experience felt like having a seasoned sailor point out the currents of a river I’ve been navigating for years. You see the familiar terrain differently.
The book’s early decision to spend real time on C# fundamentals is a welcome choice. Most Unity books skip past the language; Harrison slows down, defines concepts, and gives you enough clarity that when you finally enter Unity, you understand why things behave the way they do. Those chapters are dense in the best way: they prep beginners to stand on solid ground and give experienced users a clean, refreshed mental model of the language under the engine.
Ferrone’s real strength is his voice. He strikes a balance I rarely see in technical writing: conversational introductions that explain what you’re about to learn and why it matters, followed by crisp, accessible technical walkthroughs. The pacing (explanation → example → implementation) is excellent. And the inclusion of ready-to-use assets removes one of the biggest barriers for new developers who want to understand systems without getting lost creating placeholder art.
The book doesn’t talk down to anyone. It makes Unity feel more accessible without flattening its complexity. Beginners will come away with genuine competence; advanced users will appreciate the clear framing of new Unity 6 tools and the subtle recognition of how AI-assisted coding is shaping modern workflows. It’s a guide you can read once for understanding, then keep at your desk as a reference.
If you’re a serious hobbyist, a technically inclined beginner, or someone who’s ready to work through your first real project, this is the Unity book I’d hand you first. It bridges concept and execution with clarity and confidence, and it does so with a tone that feels patient, practical, and quietly encouraging. In a space crowded with copy-paste tutorials, Harrison Ferrone has written a Unity 6 guide with real staying power.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
★★★★★ 4
Pretty good beginner book, very user friendly covers Development and Design
Format: Paperback, Format: Paperback
I enjoy learning Game Dev, but I research books because many authors promise a lot and deliver half or not at all and I have to put the book down. This book was pretty good. I appreciate the author explaining things, and remember he's writing a book for beginners. There's also a good amount of pics in the book, and I dislike a book with no pics. Also, he breaks it down very simply and explains that you're not going to learn the entire Unity ecosystem, but rather a beginner-level understanding to get a person started. I enjoyed this book and will definitely go over particular info again. They have a Discord group and a newsletter with tips and it also goes over Game Design. I was surprised to see this, and maybe it's new to me, and I like the analogy of explaining complex terms. A con of the book is that as it progresses, it starts to come off as advanced in scripting, and I turned to AI for additional explanations. Still, the author did explain in advance that it's about to get more advanced, but that's me going deeper into the meaning and explanations. Other than that, it's a good read that you will go to more than once and has practical info to help you on your Unity journey.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025
recommand products
Coltsfoot Leaf - (Tussilago Farfa)
12.99
Kona Espresso Beans
13.49
Yellowdock Root Powder - Rumex Crispus
14.99
Speckled Malted Milk Balls - Malt Balls
12.49
Crawling Crab Baby Toy, Advanced Infrared Crawling Crab Tummy Time Toy with Music, Infant Walking Dancing Crab Baby Toy, Boys Girls Toddler 6-12 12-18 Months Interactive Singing Birthday Gift (Purple)
16.99