PLX wideband

[89tta]

I'm trying to hook up a PLX wideband to my Gen II . The gray wire from the PLX controller goes to pin 1 on the 10 pin harness (wideband/O2 input). What do I use for pin 2 (wideband/O2 ground) ? There is only the one wire (gray) on the PLX unit. Also, what wideband do I select from the list. I don't recall seeing the PLX listed.

 

[EricM]

You may not need the O2 ground. I would try it without it to see if the gauge reading matches the GenII.

PLX should be on the list. Unless maybe you have fairly old firmware on there. PLX has the same output as the older AEM gauge.

 

[89tta]

I finally finished the install. Readings were way off. I hooked up pin 2 to an ecm ground and the readings are very close. The gen II reads .2 higher than the gauge. Should the readings be same or is a slight difference ok ? PLX was not on the list so I used AEM gauge 5v.

 

[EricM]

That's likely close enough. I don't think the GenII had a way to correct for that.