Exhaust leaks, camshaft overlap, and open (shorty) exhausts will
cause false lean readings at light engine loads. Typically, once the
engine is under load and the exhaust gas volume increases, you will
see accurate readings.
When installed in the exhaust, the oxygen sensor must be connected
to a powered, functional wideband controller (no error codes)
whenever the engine is running. An un-powered sensor will be
damaged in a short period of time when exposed to exhaust gas.
Do not pre-warm the sensor before starting the engine, simply start
the engine as normal. Allowing the sensor to pre-warm before
starting the engine will increase the possibility of damaging the
sensor from shock-cooling.
The maximum temperature of the sensor at the bung (the sensor
mounting location) should not exceed 500
o
C or 900
o
F. If these
temperatures are exceeded in your application you should install the
Innovate Motorsports HBX-1 heat sink bung extender. (p/n 3729.)
As the O2 sensor measures the oxygen content of the exhaust
gas to provide an accurate O2 reading, even a small pin-hole
leak in a poorly welded sensor bung will affect the accuracy
and performance of your O2 sensor. Remember, any deviation from
the instructions provided for proper sensor installation will lead to
inaccurate O2 readings.
2.5.2 Sensor
Calibration
Once both the DLG-1 and the LC-2 have been wired, interfaced together,
and a suitable location has been found for both the devices and sensors, it is
time to perform the sensor calibration. Innovate Motorsports’ ‘Direct Digital’
wideband measurement principal allows you to calibrate the sensor to
compensate for sensor wear. This procedure takes just a few moments and it
will ensure the most accurate readings throughout the oxygen sensor’s life.
This procedure is required anytime a NEW oxygen sensor is installed.
The calibration procedure requires that the oxygen sensors be in
free air
,
this means removed from the exhaust system completely.
The procedure below will allow both sensors (from the DLG-1 and LC-2) to
be calibrated at the same time.
1.
With
the
sensors disconnected
, apply power to the DLG-1 and LC-2.
