Thread: Aem wideband completely innaccurate

I'm using an AEM UEGO 30-4100 with the PID recommended.

I have it wired to my egr position wire....

The numbers are way innaccurate. It pretty much sits @ 14.9 on HPT but moves all over on my AEM gague.

Anyone else have this issue?

Did you check HPT site for the pid setup? I saw that you were unsure about the pid you used.

Sounds like your formula is incorrect.

I'm using ([PID.2811]*2)+10 which was in the thread.

I will check hpt forums again though.

Connecting wideband via EGR or A/C Pressure in HP Tuners - Corvette Forum

It's easier to adjust/check with the key turned forward and car off. May have to run it a bit before you do that so it's not just reading air or play with it.

I honestly don't think I've ever found a formula online that has actually worked for me. I've had to figure them out for myself.

You should always try to find your voltage offset and then figure that into your formula

Originally Posted by GTPpower

I honestly don't think I've ever found a formula online that has actually worked for me. I've had to figure them out for myself.

None seem to work for me either. How did you figure them out?

My afr gague is anywhere from 11-16 when I chop the throttle... HPT moves between 15.2 - 15.5

I give up

I found a PID to start on and had to mess with the voltage a little for it to be perfect.

I have absolutely no idea what most of this means lol but I'm going to hook my wb up to my dhp whenever I get my motor swapped. Do I have to jump through the same hoops?

Wow. I am a moron. I hooked up to the wrong wire on my wb sensor.

Now working perfectly with the +9.4 parameter.


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Originally Posted by JerzNick

None seem to work for me either. How did you figure them out?

My afr gague is anywhere from 11-16 when I chop the throttle... HPT moves between 15.2 - 15.5

I give up

You have to do some math and figure out your voltage offset.

For instance, my LM-1 had a 0-4v output, but HPT reads 0-5v. I had to adjust it for that.

Just command. Voltage in your wideband software with key in acc engine off say u command 2.5 volts then open up hptuners software and see what you read

Noob question here. How do you command that?

You can't program the AEM.

You can't program the wideband voltage slope with arm? Wow well you could always use a volt meter and compare the readout to your HP tuners reading to get the same result