Datalogging AFR w/ an AEM wb and Freelog.
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From: In the sticks, Ny, US
Datalogging AFR w/ an AEM wb and Freelog.
Im going to be using the free version of crome along with freelog to learn how to tune my car. Ive been researching on PGMFI for the last three months and have been learning alot. I purchased the Moates HULOG and plan to premantly install it in my car along with my AEM UEGO wideband. I understand that my WB has a 0-5v output for the signal and that my ecu will only read up to 0-3.85v. I dont think i can adjust the output on my WB like the LC-1'S.
I was wondering if instead of my hooking my signal wire up to D14, would i be able to wire the signal wire to the corresponding wbo2 wire on the datalogging cable? Or does the ECU need to translate the information? I figured it would have a broader spectrum of data with it being able to read more than just 3.85v.
Ive also heard that you can modify the ecu to read up to 5v signals. But I would have to use my WB02 for my ecu to use it in closed loop? And wouldnt that eliminate the need for my NBo2?
Im not shure if this is a better way of doing it or not.
I would appreciate all insight! Id hate to get rid of my brand new Wideband for another one..
I was wondering if instead of my hooking my signal wire up to D14, would i be able to wire the signal wire to the corresponding wbo2 wire on the datalogging cable? Or does the ECU need to translate the information? I figured it would have a broader spectrum of data with it being able to read more than just 3.85v.
Ive also heard that you can modify the ecu to read up to 5v signals. But I would have to use my WB02 for my ecu to use it in closed loop? And wouldnt that eliminate the need for my NBo2?
Im not shure if this is a better way of doing it or not.
I would appreciate all insight! Id hate to get rid of my brand new Wideband for another one..
Honda-Tech Member
Joined: Aug 2004
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From: Denton, TX, USA
Re: Datalogging AFR w/ an AEM wb and Freelog.
You CAN modify the output signal, if you read the manual. However after talking to Xenocron, he said the superlean values between 3.8 and 5 wont be used much anyway, so to just use D14. However, I have heard from a number of individuals that AEM and Freelog even with the values setup correctly logs incorrect values.
Junior Member
Joined: Jan 2008
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From: Vancouver, BC
Re: Datalogging AFR w/ an AEM wb and Freelog.
You CAN modify the output signal, if you read the manual. However after talking to Xenocron, he said the superlean values between 3.8 and 5 wont be used much anyway, so to just use D14. However, I have heard from a number of individuals that AEM and Freelog even with the values setup correctly logs incorrect values.
The mod that allows you to monitor voltages up to 5V isn't as beneficial for monitoring the lean AFR voltages from 3.85V to 5.00V, the mod is a low pass filter that eliminates a large amount of (high frequency) noise on the signal. I still recommend doing this mod for people that use Crome Pro or Freelog to monitor the voltage from a wideband. I honestly don't know about other ECU tuning software programs though.
I will post the helpful links for doing the "5V Wideband" ECU modifications and setting them up properly in the software.
http://forum.pgmfi.org/viewtopic.php...a&hilit=5v+mod
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