EFI K Performance Tiny O2 Manual de usuario
Tiny O2 Controller r2.0 User Manual Kperformance
Warning
•Do not connect or disconnect the Lambda Sensor
while powered, only do so when unpowered.
•The Lambda Sensor gets very hot during normal
operation, be careful when handling it.
•It takes roughly 30 seconds to 2 minutes to warm up
the sensor. Once the sensor is warmed up an engine
start could create condensation in the sensor, this
may cause thermal shock and damage the sensor. It
is best to power off a power source that is “live”
when the engine starts.
Package Contents
Tiny Wideband should include the following Items:
• x circuit board with soldered surface mount components
• 2x MicroMolex connectors
• 6x MicroMolex receptacles
•x 3d printed case and cap (optional)
•x OLED screen(optional)
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Tiny O2 Controller r2.0 User Manual Kperformance
Electrical connections
U2 Color Function
YELLOW YELLOW LSU YELLOW
WHITE WHITE LSU WHITE
GREY GREY LSU GREY
RED RED LSU RED
LACK BLACK LSU BLACK
GREEN GREEN LSU GREEN
GND GROUND
+5V EXTRA +5V SUPPLY MAX 500mA
GP2 EXTERNAL GROUND ACTIVATING
NA /
<OUT> ANALOG OUTPUT 0-5V
U3 Function
12V 2X INPUT VOLTAGE 8- 8V
GND 2X GROUND
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Tiny O2 Controller r2.0 User Manual Kperformance
Sensor Exhaust Installation
•The Lambda Sensor should be installed between the 0
o’clock and the 2 o’clock position, less than 60 degrees
from vertical, this will allow gravity to remove water
condensation from the sensor.
•For all Oxygen sensor installations the sensor must be
installed before the catalytic converter.
•Avoid running the sensor to hot!
•Never leave an un-powered sensor in the exhaust system
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Tiny O2 Controller r2.0 User Manual Kperformance
O-LED Display(Optional)
.3 and 0.96 I2C are supported without software changes.
Double check VCC&GND pins on aftermarket OLED-screens! Low budget/quality
screens can cause freeze and hang up of Tiny Wideband Controller!
Initial stand-by screen will show:
•Icon Sensor connection
•Icon GP2 ground status (GP2 not grounded= NO START)
•Icon Battery voltage
After succesfull start, the screen will show:
•Temperature value
•Lambda value
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Tiny O2 Controller r2.0 User Manual Kperformance
Starting and operating
Linear output settings:
0V = Lambda 10.20 = AFR 22.35
5V = Lambda 0.650 = AFR 9.50
Starting of the controller can be done by grounding “GP2” (solder
bridge on PCB) or external start grounding on molex connector,
with customer requirements setting.
Ie:start lambda controller only after engine starts. (programmable
output function within stand-alone ECU)
Not grounding of pin “GP2” will result in a standby lambda
controller! Blinking LED.
Operational led Status
LED Status Function
STS Solid Heating sensor status
PWR Blinking Fast
STS Solid Operational measuring status
PWR Blinking Slow
STS Blinking Standby and/or error status
PWR Blinking
PC Layout
For easy integration we'll share the layout so the controllers can be
integrated in to own projects.
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Tiny O2 Controller r2.0 User Manual Kperformance
User Remarques and info
7Pre-canbus release
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