So iv read so many different things on the aem wideband.
how do you actually hook it up to use it to target afr(llamda) in chrome i have a chipped p28.
wideband # is 30-4100

 

0-5V output from AEM must go into available 0-5v auxiliary input on Chrome P28. Not sure which pin that is but from the AEM its the white wire.

Once wired in you have to set-up the AEM analog signal to read correctly in Chrome.

 

im not sure really what your saying, that the white wire needs to go to a 5v auxiliary port? but how do i find out which one that would be?

 

anybody? can i just hook in straight to the o2 sensor pin-out?

 

If you don't know what I am saying than you probably did not read instructions from your Wideband or your Chrome purchase...check with the instructions you got from chrome...there should be something on spare auxiliary input or even specified O2/lambda input.

 

hmm maybe i missed something on it then, i guess ill have to look and try and find them, but idk where they are

 

ok, done more research, looks as if you tie it into d14 on any obd1 ecu. Also i found my directions(or atleast part of them) and in crome under the tuner logging it shows different numbers for the o2 sensor volt to afr, than in the directions. question is, is the numbers in the packet only for the ems or all? because it says to only change in the ems. Also how do i go about using lambda? Is there anything i need to change so it will read the wide band?

 

Each sensor will have a different volt to afr calibration that will need to be entered into your Crome EMS.

About Lambda...changing it from AFR to Lambda will have to be done on both units. On the AEM gauge there is a small white dial on the back that is set to p0(default). Setting it to p1 will put it into lambda. Once in lambda you will have to change the volt to afr cal settings in your crome file to match.

As for your last question on changing anything to read wideband...well you have a wideband sensor from AEM. As for our crome ems, check the settings as they are probably capable of reading both narrow and wideband o2's.

 

i mean crome has settings for a bunch of widebands and tells the voltage to afr, but it is different than in the book, but it only says to change it in the aem ems, it doesnt say anything about all the other tuning software. Which should i use? or since it will be data logging cant i see the gauge and what the afr is reading on my laptop? and they need to be the same?

 

??? Im going to take a guess that you are talking about the AEM instructions for the wideband. If your using chrome...ignore what it says about an AEM EMS (you dont have one). Use the info supplied to you by chrome to adapt the sensor reading...the readings should match up between what chrome see's and what your seeing on your gauge. If it's off by a little (between .1 -.3) its OK.

 

yes, ok thats what i figured. Am i right about pinning it into d14 though?