AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual - Manual (Page 205)

Tuning Guide 199
© 2014 AEM Performance Electronics
UEGO Sensors Installed:
Infinity 8 and Infinity 10 ECUs can have up to 2 UEGO sensors installed. Infinity 6 and
Infinity 8H can have up to 1 UEGO sensor installed. Check the "UEGO Sensor Installed"
boxes for each sensor that is connected to the ECU. Selecting UEGO Sensor Installed
effects the following:
Malfunction Indicator Lamp (MIL):
Uncheck the "UEGO Sensor Installed" box if a sensor is not installed to prevent the
MIL Output from activating.
UEGO heater circuit:
The UEGO heater circuit requires accurate status of which UEGO sensors are
installed for proper functionality.
Lambda Feedback Enable:
Enable/disables the lambda feedback feature.
Lambda Feedback Rich Limit:
Maximum allowable feedback value when adding fuel to enrich the fuel mixture. Lambda
feedback will be clamped to this maximum value, even if the measured air/fuel ratio is
leaner than the target.
Min value = 0%, Max value = 50%
Lambda Feedback Lean Limit:
Maximum allowable feedback value when removing fuel to lean the fuel mixture. Lambda
feedback will be clamped to this maximum value, even if the measured air/fuel ratio is
richer than the target.
Min value = -50%, Max value = 0%
Lambda Activation Criteria:
Lambda Feedback Min Speed [RPM]:
Lambda feedback is disabled below this RPM. This value should be increased for setups
with aggressive camshafts or very short exhaust piping after the sensor, which can result
in 'false lean' measurements when the O2 sensor measures outside air in addition to
exhaust gas at low engine speeds.
Min value = 0, Max value = 20,000
Lambda Feedback Max Speed [RPM]:
Lambda feedback is disabled above this RPM. Used to force open loop operation above
a certain engine speed.
Min value = 0, Max value = 20,000