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LCU Lambda Controllers
Smaller, lighter, faster. And Open
 
LCU Lambda Controllers are proposed in two versions: AiM Expansion and Open version, to be connected to every device.
 
 
LCU1S
LCU1S Open
LCU2
LCU2 Open
   Sensor Compatibility
Bosch LSU 4.9
   Power supply voltage
9÷15 V
   Power supply current
50 mA + sensor heater typical current 750 mA up to 2 A on cold sensor for each sensor connected
   Lambda value
From 0.75
   Reaction time
Less than 10 msec
   Connections
6 pins Bosch female connector + 5 pins Binder
712 male connector
6 pins Bosch female connector + 7 pins Binder
712 female connector
Two 6 pins Bosch female connectors + 5 pins Binder
712 male connector
Two 6 pins Bosch female connectors + 7 pins Binder
712 female connector
   Materials
Latigloss 57 (PPA Glass Fiber Reinforced)
   Dimensions
43.4 x 30 x 18.4 mm (LCU1S/LCU1S Open) - 65.0 x 34.8 x 18.4 mm (LCU2/LCU2 Open)
   Weight
70 g
   Waterproof
IP67
 
LCU Lambda Controllers allow to perfectly tune
the carburetion of your engine to keeping it
at its best and improve the engine's performances.
They use one (LCU1S) or two (LCU2)
wide band Bosch LSU 4.9 sensors
that save the original calibration
for the duration of the sensor's life.
In fact, Bosch LSU 4.9 probe has been designed
to last for more than 100,000 km on a stock car.
Precision and reliability
LCU Lambda Controllers can detect accurate
Lambda value from 0.65 to 1.6, offering
an extremely precise measurement,
very useful for engine tuning.
Through the analysis of the remaining oxygen,
LCU controllers point out a possible oxygen excess/lack
in the carburetion and provides essential information
for 2 strokes and 4 strokes engines.
The configuration of Stoichiometric ratio allows
the controllers to be used on petrol,
diesel and also alternative
fuel powered engines.
OPEN VERSIONS
The LCU Open versions allow you to transmit the data
via CAN to every system: configuring the output is very
flexible, by setting IDs, messages, baud rate and frequency.
The LCU Open versions can also be used as an
AiM Expansion, without any issues or limitations.
CAN OUTPUT
LCU Open versions allow to build a CAN Output on RaceStudio 3 to communicate with external devices. You can set bit rate protocol, field messages and CAN payload details.
With the Lambda Multiplier Manager it is possible to customize the stoichiometric air fuel-ratio or choose to use the pre-defined default value.
Installation of an LCU1S on a Mini Miglia/Libra, performed by the highly skilled Matt (April 2025).