PLX Devices SM-AFR - Manual

Termination Jumper:
Termination Jumper comes pre-installed in the SM-AFR for standalone use.
Tip: When connecting multiple SM Modules, remember to remove Terminal
Jumper(s) from every SM Module after the first in the iMFD daisy chain. Leave
the first SM Module with the Jumper installed.
WARNING:
*Double-check polarity of power before powering it on for the first time. Connecting the SM-AFR in reverse
polarity will damage the unit!
Step Six
Connect power to the SM-AFR
Tip: Find and connect to 12-18v power source (We advise the ignition
switch.) A 5Amp fuse is recommended for safety.
DO NOT POWER UNIT UNTIL INSTALL IS COMPLETE.
Step Five (Not needed for stand alone setup)
Connect 0-5v output to third party datalogging system or aftermarket ECU
Tip: To interface with your third party application, use the gray wire sup-
plied in your SM-AFR Connect Kit. You will need to know the Diagram Pin
Out of your specific vehicle.
Step Four (Only if replacing narrowband sensor)
Connect 0-1v output to ECU
Tip: To interface with your ECU, use the gray wire supplied in your SM-AFR
Connect Kit. You will need to know the Diagram Pin Out of your specific
vehicle.
Step Three
Connect the harness to the SM-AFR unit
Tip: If routing O2 Harness through a firewall, use a grommet. Avoid having
the harness come in direct contact with exhaust. This will prevent damage to
the O2 Sensor Harness.
Step One
Install the Wideband O2 Sensor. Install Bung. Mount the wideband oxygen sensor before the catalytic
converter and at least 24 inches downstream from your engine block or turbo.
Tip: Mount the O2 Sensor before the catalytic converter or at least 24” downstream from your engine
block for naturally aspired and 36” for turbo engines for optimal performance. The sensor should be
mounted in the top side of the exhaust pipe at a 15 degree angle away from the flow of the exhaust.
Step Two
Connect the sensor to the wire harness
Setting up the SM-AFR
Black (negative)
Red (Positive)