The UK's official Speeduino distributor

£75.00 exVAT⠀⠀£90.00 incVAT

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

27 in stock

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Controller only unless additional sensor option is selected.

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

Fully assembled and ready to go in the premium ASA case.
Full connector kit included. Including both 6 & 4 pin molex connectors, the 6 pin LSU 4.9 connector along with their terminals are included, you just have to supply cable/wiring.
Optionally add a premade 2 metre 6 pin molex to 6 pin LSU 4.9 connector harness, leaving you to just wire in power, ground and the signal output.

Recommended cable specifications are; 4 conductor stranded 20 AWG and 6 conductor stranded 20 AWG


SLC Free 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 fuel types
Lambda Range: 0.68[Lambda] linear to 1.36[Lambda]
0.01 Lambda accuracy without the need for any calibration
O2 Sensor Temperature Monitor
Did you know that the most common cause of inaccuracies and premature O2 sensor failure is attributed to the O2 sensor temperature being improperly controlled?
Linear output allows easy interfacing with gauges, fuel management systems, and dataloggers
Linear Output: 0[v]@0.68[Lambda] linear to 5[v]@1.36[Lambda], 10[AFR] linear to 20[AFR] equivalent for gasoline
Simulated Narrowband Output allows you to install a Wideband O2 Sensor in place of your Narrowband O2 sensor
Switch point @ 1[Lambda], 14.7[AFR] equivalent for gasoline
SLC Free 2 features an attractive 2 line backlight LCD display – displaying AFR with 0.1 resolution and displaying O2 sensor temperature with 1[C] resolution









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