EFIDynoTuning Forum

🛠️ Help Needed: Logging Wideband AFR via APU1 Analog Input Alongside ECM Data in TunerPro RT V5
Hi all — I’m trying to log wideband AFR from a Performance Electronics WB-O2 controller alongside ECM parameters (RPM, MAP, TPS, etc.) in TunerPro RT V5 on my 1985 Corvette (L98 TPI).


🔧 Setup:
• ECM: 1226870
• XDF: 1F_updated.xdf
• ADS:$1F.ads from Gearhead EFI
https://www.gearhead-efi.com/Fuel-In...Information-1F
• Interface: Moates APU1 with AutoPROM
• Wideband: Performance Electronics WB-O2 (this exact kit: https://pe-ltd.com/product/wideband/)
• Software: TunerPro RT V5


🔌 Wiring:
• The pink analog output wire from the PE wideband controller is connected to Port 1 Analog Input on the APU1 AutoPROM.
• Voltage sweep confirmed: 0–5V matches AFR range of 10–20.


🎯 Goal:
I want to log AFR from the wideband controller at the same time as ECM data in one TunerPro session and datalog file.


📐 AFR Formula:
Using ((X * 2) + 10) in the ADX monitor item to convert the raw analog byte to AFR.


❌ Problem:
- ECM data logs fine using $1F.ads
- AFR monitor item shows nothing — blank or zero
- TunerPro doesn’t seem to recognize the analog input unless it’s part of the ADS or a merged ADX
- I don’t know how to build a custom ADX that merges analog input polling with the ECM datastream




🧩 Questions:
- Has anyone successfully merged analog input polling into a $1F ADX?
- Is there a known-good ADX template that logs both ECM and wideband AFR via APU1 analog input?
- Does AutoPROM passthrough mode interfere with analog input polling?
- Can someone help me build or share a working ADX that does this?
Any help or working examples would be hugely appreciated. I can share my ADX file or screenshots if needed.


Thanks!
— Billy

you should be able to edit the adx and add it

go to values

add a new one for the wideband with your equation given. You'll need to know the offset that the analog voltage input is being logged at.

then go to your dash and add the guage there or if you have a place holder already simply right click it on the actual datalogging dash screen and select your new parameter