The UK's official Speeduino distributor

£130.00 inc. VAT: £156.00

An ideal way to add full wideband air fuel monitoring to your ECU on a budget.

In stock


This is a kit including the Spartan 2 controller and our LSU 4.9 Sensor.

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

Spartan 2 is crafted with all automotive grade extended temperature components, this means Spartan 2 offers automotive OEM reliability over the widest operating temperature range possible; -40[C] to 125[C]. 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, the highest quality components, and extensive factory calibration means 0.01 Lambda accuracy — without the need for any calibration.


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
Compatible with all fuels

AFR/Lambda range, 0.68[Lambda] to 1.36[Lambda], 10[AFR] to 20[AFR] equivalent for gasoline

0.01 Lambda accuracy without the need for any calibration
Utilizes our patent pending Binary Drive technology; no other system is more digital
Linear Output allows easy interfacing with gauges, fuel management systems, and data-loggers

Linear Output: 0[V] @ 0.68[Lambda] linear to 5[V] @ 1.36[Lambda], 10[AFR] linear to 20[AFR] equivalent for gasoline

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

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

MegaSquirt users, check out how to use the Output Sequencer for maximum AFR accuracy here

Simulated Narrowband Output allows you to install a Wideband O2 Sensor in place of your Narrowband O2 sensor

Simulated Narrowband switch point @ 1[Lambda], 14.7[AFR] equivalent for gasoline

Easy 4-wire installation for most setups
A Two-Year Warranty that is twice as long as any competing product (controller only)

Additional Features and Specifications:

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


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