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Spartan Lambda Controller 2

by 14Point7
This product is not available

Spartan Lambda Controller 2 has been replaced by Spartan 3 Lite v2

Spartan 2 will only work with genuine Bosch LSU 4.9 sensors, clone sensors are not compatible.

Spartan 2 is a purebred Wideband Oxygen Controller for the Bosch LSU 4.9 Wideband sensor with no excess.

14Point7 stands behind this product with a warranty that is twice as long as any competing product, 2 years

Spartan 2 is equipped with both an analog Linear Output and Simulated Narrowband Output that is compatible with most gauges, ECUs, dataloggers, etc…

The advanced design, highest quality components, and extensive factory calibration means 0.01 Lambda accuracy — without the need for any calibration.

Spartan 2 is designed with MegaSquirt in mind, Spartan 2’s Output Sequencer feature provides MegaSquirt with calibration signals to achieve the highest Lambda accuracy possible over the analog Linear Output. To find out more please follow the link here

Note: Lambda sensor carries a 3-month warranty. Earlier versions of Spartan 2 were made with all high-temperature automotive grade components, current versions use a mix of industrial and automotive grade components due to obsolescence of key automotive-grade components.



Spartan 2 utilizes the Bosch LSU 4.9 Wideband O2 Sensor - a cost efficient Wideband O2 sensor providing 0.01 Lambda accuracy, fast response, and rated life of 100,000 km
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Compatible with all fuels
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AFR/Lambda range, 0.68[Lambda] to 1.36[Lambda], 10[AFR] to 20[AFR] equivalent for gasoline
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0.01 Lambda accuracy without the need for any calibration
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Utilizes our patent pending Binary Drive technology; no other system is more digital
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Linear Output allows easy interfacing with gauges, fuel management systems, and data-loggers
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Linear Output: 0[V] @ 0.68[Lambda] linear to 5[V] @ 1.36[Lambda], 10[AFR] linear to 20[AFR] equivalent for gasoline
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Our innovative Output Sequencer feature means our Wideband O2 Controllers to have the most accurate Linear Output on the market. You can be sure that any device connected to the Linear Output will receive the most accurate AFR/Lambda signal possible
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The Output Sequencer provides a dual level precision voltage signal to the Linear Output. This allows you to easily check that the AFR/Lambda seen by any device connected to the Linear Output is accurate, and if not, to generate a 2 point calibration to achieve perfect accuracy
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MegaSquirt users, check out how to use the Output Sequencer for maximum AFR accuracy here
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Simulated Narrowband Output allows you to install a Wideband O2 Sensor in place of your Narrowband O2 sensor
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Simulated Narrowband switch point @ 1[Lambda], 14.7[AFR] equivalent for gasoline
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Easy 4-wire installation for most setups
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A Two-Year Warranty that is twice as long as any competing product
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60 day money back guarantee


Additional Features and Specifications:

  • 7 ft cable length
  • Total length with LSU 4.9: 10 ft
  • Water, dust, and dirt resistant 



"Spartan worked great for my application, accuracy was perfect when compared to a dyno wideband" 
H. Roth, satisfied Spartan Lambda Sensor customer

"Spartan was very easy to install and worked flawlessly with my MegaSquirt all for half the price of competing products"
M. Cruz, satisfied Spartan Lambda Sensor customer

"I have recommended Spartan to countless of my friends and customers"
BB Jones, satisfied Spartan Lambda Sensor customer

Software and Documentation

Package Contents
  • Spartan Lambda Controller
  • Waterproof fuse holder
  • 2x 5 Amp fuse (replacement included)

Spartan 2 Compatible Products:

Solid AFR Gauge

Premium Oxygen Sensor Bung

Standard Oxygen Sensor Bung

Bosch LSU 4.9

5 out of 5, based on 4 reviews
Alan H from Wisconsin on Sep 18, 2016
Simple, stable, easy to install.
Simon J from England UK on May 05, 2016
Used both the Spartan 1 & 2 with good consistent results unlike my previous Innovate LM-2 WBC, both do exactly as intended although I do prefer the neatness of the Spartan 2 over the 1, previously never heard of 14point7 until I read some promising reviews online, glad I did.
Nicholas Chang from Jamaica on Jun 26, 2015
very simple clean looking setup if i didnt already know its a wideband id have never guessed it was anything more than an O2 sensor with a long wire harness

installation was pretty easy its literally just running a wire !!!! also recommend you purchase the gauge to go with this as it looks great
Nicholas M Chang from United States on Apr 09, 2015
seller communication was a little slow but he was always helpful and answered questions even help sort out a little mixup with no hassle

item arrived sensor seems to have been a new but pretested before sent out to prevent errors i do appreciate the quality control there

item was much smaller than i anticipated and seems to be easier to hide away its basically a long cable u can cut to length

added bonus was that it emulates narrowband signal for stock computer so u can have wideband without putting a bunch of holes in ur system :)

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1237 Shaw Street Toronto, Ontario M6G3N9 Canada 416-273-5409

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