Analog voltage not recording correctly

[SweetS10V8]

Ive been trying to AutoVE and have found that my V2 doesn't record correctly what my widebands analog is outputting.

I have a FAST wideband, and noticed the the V2 was reading differently(on my laptop) than the FAST display. The FAST PIDs use the high resolution which has a calculation I cant do in my head, so I made it easy on myself by switching to low rez so I could diagnose what was happening a little better.

The FAST low rez has an output that is (V*10). So I searched through the other widebands pre programmed and found the LM1 uses the same calculation, so I setup to record V*10 on the FAST and in the LM1 in the EFILive Scanning.

I run my truck, and turn it off(key back on), so it holds A/F steady. I then check the FAST display and it reads 13.8 and is solid. I check my laptop scanning and its bouncing from 12.0-14.6.

So I take my multimeter to my analog output(orange piece that plugs into the V2) and check the actual voltage being output and its 1.38x and very steady. This tells me the FAST wideband is telling the V2 exactly what it should, but the V2 is just not reading it correctly to allow me to AUTOVE correctly.

Any ideas? Ive rechecked that the connection was tight, and that the connector is plugged into the V2 all the way.

[mr.prick]

Try changing the AD filter in the V2.
You may need to calibrate the AD inputs.

I believe the F.A.S.T can be used with serial instead of analog too.
You can see the difference between the two here:
http://forum.efilive.com/attachment.php?attachmentid=6496&d=1256054929

[67SS509]

Ive been trying to AutoVE and have found that my V2 doesn't record correctly what my widebands analog is outputting.

I have a FAST wideband, and noticed the the V2 was reading differently(on my laptop) than the FAST display. The FAST PIDs use the high resolution which has a calculation I cant do in my head, so I made it easy on myself by switching to low rez so I could diagnose what was happening a little better.

The FAST low rez has an output that is (V*10). So I searched through the other widebands pre programmed and found the LM1 uses the same calculation, so I setup to record V*10 on the FAST and in the LM1 in the EFILive Scanning.

I run my truck, and turn it off(key back on), so it holds A/F steady. I then check the FAST display and it reads 13.8 and is solid. I check my laptop scanning and its bouncing from 12.0-14.6.

So I take my multimeter to my analog output(orange piece that plugs into the V2) and check the actual voltage being output and its 1.38x and very steady. This tells me the FAST wideband is telling the V2 exactly what it should, but the V2 is just not reading it correctly to allow me to AUTOVE correctly.

Any ideas? Ive rechecked that the connection was tight, and that the connector is plugged into the V2 all the way.

I'm battling with the same problem. I just don't believe a slow analog signal will give the same results as the serial connection (or digital). But when I send a constant voltage to the Flashscan I get a steady and accurate AFR on the laptop. I think your ground is floating. I use a ground wire from the orange connector to where the Diagnostic port is grounded. Hope this helps.

[mr.prick]

I know the LC-1 has a system ground the emits 1V.
It can't be connected to Flashscan's AD- or it will skew all AD input.
Use a DMM to see if the ground emits any voltage.
Also the PID for the F.A.S.T WBO2 is for hi res mode,
if you are using simple mode use the LM-1 PID

Simple Mode: This takes the output voltage and multiplies it by 10 to calculate the actual air/fuel ratio. Many external electronic air/fuel gauges use this signal type.
Wide Band AFR 1 - LM-1 {CALC.AFR_LM11}
Expression:
AFR = {EXT.AD1}*10

[67SS509]

Try changing the AD filter in the V2.
You may need to calibrate the AD inputs.

I believe the F.A.S.T can be used with serial instead of analog too.
You can see the difference between the two here:
http://forum.efilive.com/attachment.php?attachmentid=6496&d=1256054929

I calibrated the analog input on mine today. My dashboard displays 10AFR at
.5v and 20AFR at 4.5 which is correct for my FJO.

Specifically, what filters do I need to use to make the AFR on the dashboard not be so erractic when the engine is running?

[mr.prick]

It's in the V2 settings.
F4> F1> F1 scroll down to ADFilter
AFR is going to float in between each cylinder firing.

Don't calibrate the ADs with your WBO2 controller, to avoid any ground offsets.
Use some AA batteries without anything else connected to the AD inputs.
Does the FJO have a dedicated analog ground?

[67SS509]

It's in the V2 settings.
F4> F1> F1 scroll down to ADFilter
AFR is going to float in between each cylinder firing.

Don't calibrate the ADs with your WBO2 controller, to avoid any ground offsets.
Use some AA batteries without anything else connected to the AD inputs.
Does the FJO have a dedicated analog ground?

The controller has a ground wire but not one dedicated with the output to the Flashscan. I run a ground back from the Flashscan so it will not float.

Do you have to be connected to go into V2 settings?

[mr.prick]

Yes I meant the V2's internal settings.
You can get there with the V2 plugged into the laptop and either use
the V2's key pad or the scan and tune software.

[SweetS10V8]

I ended up using the "FlashScan V2 Control Panel (Ctl + F11)" and an adjustable voltage power source to calibrate the external voltage channels.

It seems to have worked very well, Im now back on the FAST "Hi-Rez" mode so slight fluctations in voltage dont matter as much, so its .28 point AFR per .10V instead of 1.00 point AFR per .10V