My plx m-500 unit is showing 14.6-14.7 always ..
i have hooked it up as the instructions says.
and replaced the stock narrow o2 with the wo2 and narrow output

i know the car is running rich.. any knows what the problem could be?

thanks

 

just noticed that my idle rpm is 1200 instead of 750-800
allthough its steady.

any clues?

 

bump

 

recalibrate? double checked that the settings you have are correct?
where is the sensor?

 

its self calibrating and theres no settings to change..
its in my downpipe, replaced my narrow o2 sensor...

 

problem solved.. found that one wire was cut behind the protective plastic...

 

why was it cut?

how do you like the unit so far?

groupbuy anyone cheapest ive found it for is $469 from http://www.urdusa.com/Merchant..._Code=

 

well i got mine and im not getting an AFR signal from the controller through wireless to the notebook. it sends rpm from the datalogging inputs through wireless, just not AFR. controller displays AFR fine. narrowband and wideband outputs work fine.

i'm not supposed to hook the wideband output and loop it back into the analog input am i? the instructions dont say you need to do this.

 

Unfortunatly I believe you have to.

I have the same wideband and couldn't get my afr to log as well. I haven't confirmed this through anyone plx though. I remembered reading it in another post. My car is down right now so I can't really test it. But if you find out please let me know.

Thanks

Ed

 

I just looked up PLX website.

It looks like you are correct you do have to take you wideband output and feed it back into a analog input.

http://www.plxdevices.com/M-Se...o.htm

If you look at where they tell what signals you can datalog, you will see

PLX WIDEBAND AIR/FUEL RATIO - In RED identifying it as a Analog Input.