Innovate Motorsports LM-2 - Manual (Page 11)

Document # 31-0008 LM2_Manual_1.3.doc 11
The LM-2 must be powered by the cigarette adapter (12 volts) in order to
properly heat the Oxygen sensor and measure Air/Fuel. If the unit is only to be
used connected to the OBDII port it will properly function as a scan tool.
2.2 Sensor Placement
Using a bung is the preferred method for mounting the O
2
sensor for both catalytic and
non-catalytic cars.
On
CATALYTIC CONVERTER equipped vehicles:
Install the oxygen sensor’s bung upstream from the catalytic converter (a bung and
plug is included in the LM-2 kit). The bung must be installed in the exhaust pipe at
the side or on top, NOT on the bottom of the exhaust pipe. Any decent muffler or
exhaust shop can do this for you. The wide-band oxygen sensor is then installed into
the bung to take a reading. (Insert the plug into the bung when not in use). The ideal
position is between 10:00 and 2:00 position.
On NON - CATALYTIC converter vehicles:
You have the option with non-catalytic cars to also use an exhaust clamp as
described below. Use of a bung is the preferred method for mounting the 0
2
sensor
for both catalytic and non-catalytic cars.
On TURBO CHARGED vehicles:
Install the bung downstream from the turbo but before the catalytic converter. The
high exhaust pressure before the turbo interferes with the lambda measurement and
the high exhaust temperatures encountered there can damage the sensor.
Alternatively you can also use the optional exhaust clamp (part number 3728) to sample
exhaust gases at the end of the tail pipe.