Haltech Nexus S2 vs. S3 ECU: Which One is Right for You?
At GameOn Motorsports, we’re excited to introduce the latest innovations from Haltech—the Nexus S2 and S3 ECUs. These cutting-edge engine control units are packed with features designed to take your vehicle’s performance to the next level. But with two powerful options, how do you choose between the Nexus S2 and S3? Let’s dive into the details.
Overview of the Nexus S-Series
The Haltech Nexus S-Series brings a new era of ECU technology, integrating the best features from both engine and power management systems. These ECUs are designed to be the brain of your high-performance vehicle, offering advanced control over every aspect of your engine and power delivery.
Key Features of the Nexus S2 and S3 ECUs
| Feature | Nexus S2 | Nexus S3 |
|---|---|---|
| Processor | Quad-Core ARM Cortex A7 | Quad-Core ARM Cortex A7 |
| Input/Output Channels | 16 x Analog Inputs | 24 x Analog Inputs |
| 8 x Digital Inputs | 12 x Digital Inputs | |
| 8 x Auxiliary Outputs | 12 x Auxiliary Outputs | |
| ECU Logging | 64MB Internal Storage | 128MB Internal Storage |
| CAN Bus Channels | 2 | 3 |
| On-Board Oscilloscope | Yes | Yes |
| ESP-LINK Wi-Fi Connectivity | Yes | Yes |
| Built-In Wideband Controller | Dual Channel | Dual Channel |
| Onboard Power Management | 4 x 25A Outputs | 6 x 25A Outputs |
| Built-In Engine Protection | Yes | Yes |
| Ethernet Connectivity | Yes | Yes |
In-Depth Comparison
Performance
Both the Nexus S2 and S3 are powered by the same Quad-Core ARM Cortex A7 processor, ensuring rapid data processing and real-time engine control. However, the S3 steps up the game with more input and output channels, making it suitable for more complex setups. If your build requires a higher number of sensors and auxiliary outputs, the Nexus S3 will provide the flexibility you need.
Data Logging and Connectivity
When it comes to data logging, the Nexus S3 takes the lead with 128MB of internal storage compared to the S2’s 64MB. Additionally, the S3 offers an extra CAN Bus channel, which can be crucial for more advanced vehicle communication networks.
Power Management
Both ECUs feature built-in power management with the ability to control up to 25A outputs. The S2 provides four of these outputs, while the S3 offers six, giving the S3 an edge in managing more complex electrical systems in your vehicle.
Which One Should You Choose?
If you’re building a vehicle that requires moderate customization and you’re looking for a reliable, high-performance ECU, the Nexus S2 is a solid choice. It provides all the essential features you need to control your engine and manage power efficiently.
However, if your project involves a more complex setup with numerous sensors, auxiliary devices, and requires extensive data logging, the Nexus S3 is worth the investment. Its additional input/output channels and enhanced data storage capacity make it the go-to option for more demanding builds.
Final Thoughts
Both the Nexus S2 and S3 ECUs are top-tier products that embody Haltech’s commitment to innovation and performance. Whether you choose the S2 or S3, you’re equipping your vehicle with a powerful tool that will enhance your driving experience.
S-SERIES FAQS
What is the difference between the Elite and the S-Series?
With the S2 and S3, we’ve taken the best features of the Elite 1500 and Elite 2500, and combined them with more modern Nexus hardware.
The S-Series gives you these advantages over the Elite range:
- • Supports Dual Drive-by-Wire Throttles
- • Single Channel Onboard Wideband: Expandible to 10 channels via external CAN devices
- • Onboard Wi-Fi using internal antenna: Enables remote monitoring and tuning through NSP and Haltech Connect App
- • USB 2.0 Comms via USB-C: Cable comms speeds up to 40x faster than Elite. Power-up over USB means you can set up your ECU before installing it in your vehicle.
- • Torque Management: Advanced drag racing function enabling pre-defined wheel slip, previously only available on NEXUS R series and Elite 2500T.
- • 128MB Onboard Data-logging.
- • Flexible IO – Unused outputs can be reassigned
What is the difference between the R-Series and the S-Series?
The R-Series includes on-board Power Distribution functionality, whereas the S-Series doesn’t.
Will you stop producing the Elite Series?
No, the Elite Series will continue production for the foreseeable future.