The Spartan Lambda Controller 2, although succeeded by the Spartan 3 Lite v2, remains a robust and reliable wideband oxygen controller, especially when paired with genuine Bosch LSU 4.9 sensors. It’s engineered for those who demand accuracy and durability in their air-fuel ratio (AFR) measurements.
Designed as a purebred wideband lambda controller, the Spartan 2 focuses on delivering precise readings without unnecessary frills. We back this commitment to quality with an industry-leading 2-year warranty, double the standard offering, ensuring you have confidence in your investment.
Equipped with both a linear analog output and a simulated narrowband output, the Spartan 2 lambda controller seamlessly integrates with a wide array of devices. Whether you’re using aftermarket gauges, sophisticated engine control units (ECUs), or data loggers, the Spartan 2 provides the accurate lambda data you need.
At the heart of the Spartan 2 is an advanced design philosophy combined with top-tier components and meticulous factory calibration. This synergy results in an exceptional 0.01 Lambda accuracy right out of the box, eliminating the need for user calibration and simplifying your setup process.
Specifically engineered with MegaSquirt systems in mind, the Spartan 2 features an innovative Output Sequencer. This function provides MegaSquirt with precise calibration signals, maximizing AFR accuracy through the analog linear output. For MegaSquirt users looking to optimize their setup, detailed information is available here.
Note: Please be aware that the lambda sensor itself carries a 3-month warranty. Also, component sourcing for the Spartan 2 has evolved over time. While earlier models boasted exclusively high-temperature automotive-grade components, current versions utilize a blend of industrial and automotive grades due to parts obsolescence.
Key Features of the Spartan 2 Lambda Controller
The Spartan 2 Lambda Controller is packed with features designed for optimal performance and ease of use in automotive applications.
| Bosch LSU 4.9 Sensor Integration: The Spartan 2 utilizes the industry-leading Bosch LSU 4.9 wideband O2 sensor. This sensor is known for its cost-effectiveness, rapid response time, and impressive 0.01 Lambda accuracy, ensuring precise AFR readings for engine tuning and diagnostics. Furthermore, it boasts a rated lifespan of 100,000 km, offering long-term reliability. |
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| Broad AFR/Lambda Range: Compatible with all common fuel types, the Spartan 2 offers a wide measurement range. It accurately reads from 0.68 Lambda to 1.36 Lambda, which translates to an air-fuel ratio (AFR) of 10:1 to 20:1 for gasoline, accommodating diverse engine tuning needs. |
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| Unmatched Accuracy Without Calibration: Experience unparalleled 0.01 Lambda accuracy right out of the box. The Spartan 2 lambda controller’s advanced design and factory calibration eliminate the need for user calibration, saving time and ensuring precise readings from initial setup. |
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| Patented Binary Drive Technology: The Spartan 2 incorporates our exclusive patent-pending Binary Drive technology. This innovative approach ensures a highly digital operation, setting it apart from conventional lambda controllers and contributing to its exceptional accuracy and response. |
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| Versatile Linear Output: The linear output feature provides seamless integration with a wide range of aftermarket gauges, fuel management systems, and data loggers. The output is precisely scaled, ranging from 0V at 0.68 Lambda to 5V at 1.36 Lambda (or 10:1 to 20:1 AFR for gasoline), ensuring compatibility and accurate data transmission to your preferred devices. |
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| Innovative Output Sequencer: Our groundbreaking Output Sequencer technology guarantees the most accurate linear output available in a wideband O2 controller. This feature ensures that any device connected to the linear output receives the most precise AFR/Lambda signal possible. The Output Sequencer delivers a dual-level precision voltage signal, allowing users to easily verify the AFR/Lambda accuracy read by connected devices. Furthermore, it facilitates a simple 2-point calibration process to achieve perfect accuracy if needed. MegaSquirt users can leverage the Output Sequencer for maximum AFR accuracy – learn how here. |
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| Simulated Narrowband Output Capability: The Spartan 2’s simulated narrowband output allows for straightforward replacement of your existing narrowband O2 sensor with a wideband sensor. This simulated output mimics a traditional narrowband sensor, with a switch point precisely calibrated at 1 Lambda (14.7 AFR for gasoline), ensuring compatibility with systems designed for narrowband feedback. |
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| Simple 4-Wire Installation: The Spartan 2 lambda controller is designed for easy integration. Most installations are streamlined with a straightforward 4-wire connection, minimizing complexity and setup time. |
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| Industry-Leading 2-Year Warranty: We stand firmly behind the quality and durability of the Spartan 2, offering a comprehensive two-year warranty. This warranty is twice as long as that of our competitors, providing you with extended peace of mind and protection for your investment in precision engine tuning. |
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| 60-Day Money-Back Guarantee: We are confident you’ll be satisfied with the Spartan 2 Lambda Controller. To ensure your satisfaction, we offer a 60-day money-back guarantee. If for any reason you are not completely happy with your purchase, you can return it within 60 days for a full refund. |
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Additional Features and Specifications
Beyond its core functionalities, the Spartan 2 lambda controller includes these additional features:
- 7 ft Cable Length: Provides ample length for flexible installation in various vehicle configurations.
- 10 ft Total Length (with LSU 4.9): Combined length of the controller and sensor ensures reach to typical sensor locations.
- Water, Dust, and Dirt Resistant: Built to withstand harsh under-vehicle environments, ensuring reliable performance in demanding conditions.
Hear From Our Satisfied Customers
“Spartan worked great for my application, accuracy was perfect when compared to a dyno wideband.” – H. Roth
“Spartan was very easy to install and worked flawlessly with my MegaSquirt all for half the price of competing products.” – M. Cruz
“I have recommended Spartan to countless of my friends and customers.” – BB Jones
Software and Documentation
For detailed instructions and advanced features, please refer to the Spartan Lambda Controller 2 User Manual.
Package Contents
Each Spartan Lambda Controller 2 package includes:
- Spartan Lambda Controller unit
- Waterproof fuse holder
- Two 5 Amp fuses (one spare)
Enhance Your System with Compatible Products
- Solid AFR Gauge
- Premium Oxygen Sensor Bung
- Standard Oxygen Sensor Bung
- Bosch LSU 4.9 Sensor
