plx calibrations?

[gotgrip666]

ok i asked around at a few local shops aand they said i need the calibrations for my plx wideband, its readin a steady 14.6 to 14.9 the dsm lnks shows differently
the car is responding to all a/f changes but the wide band is staying exacly the same

I was the sensor had to be calibrated and that i needed to find the callibrations

i've been searching but cant find anything on this so any info would be much appreciated

 

[tbonitz301]

Which model do you have?Most of plx's models require no calibration. Have you tried any different values in dsmlink?

 

[gotgrip666]

I Have The M-300

And Im Not So Great With Dsmlink Yet But The A/f On The Link Reads Totally Differnt From The Plx Wb

 

[tkelly27]

Isn't the link one just a guess?
afratioitem [ECMTuning - wiki]
I'd trust the PLX, but it would probably be good to see if it will do a free air calibration.

It doesn't say in your profile that you have bigger injectors, but I'm assuming with your mods that you do : D

 

[gotgrip666]

yes i deff have 950cc injectors

 

[OddNotion]

As asked below, when you are "seeing" the wideband's reading in DSMlink, are you certain that you are logging and displaying the actual PLX Wideband Ecu input?

Also, are you certain you are not reading the Estimated A/F ratio that DSMlink calculates based on fuel and air flow?

Gotta post a log!

 

[olmytsi]

plx m300 requires no calibration. I put mine in and it's been working fine for 2.5 years.

You wired your wideband to the rear o2 sensor line and you are logging it as plxwb? It should be exactly the same as what the display is showing.

 

[pickens]

WB units do go bad from time to time. I'd check the sensor first and then see if PLX will check out the black box for you.

 

[gotgrip666]

its a brand new sensor and there is no rea ot hook up on the car, it worked fine in my stroker setup and with this engine builed i replaced the wb sensor, think maybe it could be plugged into the wrong o2 clip? the a/f changes on the a/f guage and the dsmlink but those are both reading straight rom the ecu




ejc83
As asked below, when you are "seeing" the wideband's reading in DSMlink, are you certain that you are logging and displaying the actual PLX Wideband Ecu input?

im not sure if its reading the actual plx i just know the #'s on the wideband stay at 14.50-1490 and the dsmlink is reading and responding to the changes that i make in the a/f

 

[olmytsi]

That was confusing.


1) if you like your wideband, you want it far from the turbo/engine, it's just too hot up there. It says it in the isntructions.

2) You have to wire the wideband to the ecu and then set it up in dsmlink in order to read it in link. If you haven't done that, you are not seeing the wideband in link. Hence why it's not matching up.

 

[gotgrip666]

That was confusing.


1) if you like your wideband, you want it far from the turbo/engine, it's just too hot up there. It says it in the isntructions.

2) You have to wire the wideband to the ecu and then set it up in dsmlink in order to read it in link. If you haven't done that, you are not seeing the wideband in link. Hence why it's not matching up.

the wideband was allready wired for the car all i did was replace the sensor

 

[gotgrip666]

That was confusing.


1) if you like your wideband, you want it far from the turbo/engine, it's just too hot up there. It says it in the isntructions.

2) You have to wire the wideband to the ecu and then set it up in dsmlink in order to read it in link. If you haven't done that, you are not seeing the wideband in link. Hence why it's not matching up.

how do i set it up in dsmlink, and will affect the links readings? or will it fix the plx readings?

 

[olmytsi]

You have to wire the wideband to an input that is not used. For the 2g's the best is the rear 02 sensor input. And then you go into captured values, select plx wb and add it, and then it will ask you from where you want dsmlink to read this and you select rear o2 wire and done. Then you add it in values so you can log it. I recommend you find someone local with a dsm who knows this stuff because you can't just guess with wiring/ecu stuff.

 

[gotgrip666]

You have to wire the wideband to an input that is not used. For the 2g's the best is the rear 02 sensor input. And then you go into captured values, select plx wb and add it, and then it will ask you from where you want dsmlink to read this and you select rear o2 wire and done. Then you add it in values so you can log it. I recommend you find someone local with a dsm who knows this stuff because you can't just guess with wiring/ecu stuff.

ok listen it was allready was wired allready all i did was unclip the sensor in the engine bay
and connect the new one, plug and play , thats all i did, it worked find before the o2 sensor went bad, if there are any other suggestions because there is no rear o2 bunge on the exhaust

 

[olmytsi]

1) take the time to re-read what you post, nothing like a clear explanation and most people won't help you when they have to decipher stuff.

2) It was wired at the ecu? which wire was it wired to? Like i said, your best bet is to sign up on something like www.nyccdsm.com and find a local dsmer that can help you, it's impossible to fix these things on the internet.

3)post a dsmlink log.

 

[gotgrip666]

1) take the time to re-read what you post, nothing like a clear explanation and most people won't help you when they have to decipher stuff.

2) It was wired at the ecu? which wire was it wired to? Like i said, your best bet is to sign up on something like www.nyccdsm.com and find a local dsmer that can help you, it's impossible to fix these things on the internet.

3)post a dsmlink log.

ok i took some time off of trouble shoot it and i looked a the ecu , my wideband used to be connected to the grey wire on the ecu along with the a/f guage now the wideband is wired to the tto of the ecu somewhere, imt thinking about snipping the wideband wire and splicing it into the a/f wire on the ecu wish me luck

 

[olmytsi]

VFAQ Site - Visual Frequently Answered Questions has the 2g ecu pinout. Before cutting anything, find out which wire it is hooked up to right now.

 

[2000max]

ok i took some time off of trouble shoot it and i looked a the ecu , my wideband used to be connected to the grey wire on the ecu along with the a/f guage now the wideband is wired to the tto of the ecu somewhere, imt thinking about snipping the wideband wire and splicing it into the a/f wire on the ecu wish me luck

You should have two connections from the wideband to the ECU as one was providing the wideband signal for use with dsmlink, but also your plx was simulating the narrowband sensor to the ECU. That is why your wideband sensor was in the front 02. I run the same setup on my car.