PLX Devices SM-V/B - Manual

Users Guide: iMFD Sensor Module
Version 1.0 February 9, 2007
Version 1.0 February 9, 2007
www.plxdevices.com
(408)745-7591
iMFD Sensor Module SM-Vac/Boost
*Please read the instructions completely through at least once before proceeding with the
installation to minimize errors.
*Double check polarity of power before powering it on for the first time.
Overview:
(Figure 1)
1. Connects to 12V-18V power source
2. Analog outputs (0-5V linear output)
3. Termination jumper. Closed for first SM in iMFD daisy chain.
4. Connects to next SM in iMFD daisy chain or to first DM
5. Connects to previous SM or unconnected if first SM in iMFD daisy chain
6. Connects to vacuum hose from intake manifold.
Install the Vacuum Hose:
1. The SM-Vac/Boost module has a 3 bar MAP sensor built-in. Connect a 1/8” vacuum hose to the sensor shown above #6
2. For high boost application 15PSI and up, it is a good idea to install a zip tie around the vacuum hose to prevent it from
coming lose.
Connecting Power to the Unit:
CAUTION! CONNECTING THE SM-Vac/Boost IN REVERSE POLARITY
WILL DAMAGE THE UNIT! CHECK CONNECTIONS BEFORE POWERING
ON.
1. The SM-Vac/Boost accepts 12-18V DC for power. Connect the negative wire (black) to your vehicle’s ground. This is usually
the negative terminal of your automobile’s battery. Connect the positive wire (red) to your vehicle’s ignition power. This
power is only supplied when your key is turned passed a specific position and is off when your key is removed. Your power
connection must be capable of supplying at least 1 amp of current. A 5 Amp fuse is recommended for safety.
*If you plan to integrate the SM-Vac/Boost with other aftermarket devices by utilizing the analog output signal wire. Make sure that
the negative wire (black) is connected as close as possible to your device's ground. This guarantees that both devices "see" the same