Just decided to start learning about tuning and wanted to start by datalogging first and work my way up to realtime editing (ostrich 2.0) and burning chips. I am just about to buy the Extreme Hulog from moates and already downloaded freelog. I know there are better paid-softwares but i wanted to start with freeware to get the basics first. My car was tuned by Churchs in socal with Crome. I have a AEM UEGO wideband. What steps do I take to start datalogging?

 

Buy the hulog, plug it into the ECU, plug in the USB to the hulog and the laptop, select the port in freelog, start logging.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HRTuning &raquo;</TD></TR><TR><TD CLASS="quote">Buy the hulog, plug it into the ECU, plug in the USB to the hulog and the laptop, select the port in freelog, start logging.</TD></TR></TABLE>

yea what about logging the A/F ratios tho? I need some clarifications using the signal off my AEM UEGO sensor and how the AEM UEGO reads 0-5v instead of the typical 0-3.xx range that I heard people run into problems with. How do I wire my UEGO gauge into the ECU (P72 GSR)?

 

0-3.xx isn't typical. The O2 input is limited to 3.8v, but that has nothing to do with the wideband itself.

Run the output signal from the UEGO to the O2 input pin, which is all you can use for Crome unfortunately. Once you upgrade to something else like NepTune, eCtune, or Hondata, you'll be able to have the full 0-5v signal on the ELD, EGR, or B6 inputs as well. Crome doesn't support these at this time.

Pinouts to find the pin locations are easily found online by searching.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HRTuning &raquo;</TD></TR><TR><TD CLASS="quote">0-3.xx isn't typical. The O2 input is limited to 3.8v, but that has nothing to do with the wideband itself.

Run the output signal from the UEGO to the O2 input pin, which is all you can use for Crome unfortunately. Once you upgrade to something else like NepTune, eCtune, or Hondata, you'll be able to have the full 0-5v signal on the ELD, EGR, or B6 inputs as well. Crome doesn't support these at this time.

Pinouts to find the pin locations are easily found online by searching.</TD></TR></TABLE>

So since crome doesn't support 0-5v input signal and my AEM UEGO output is 0-5v so there is practically no point of connecting it because it would just read false readings due to the incompatible scales.

 

Incorrect, you can still log through the primary o2 sensor input.

 

You can datalog it, you just can't see above 3.8v...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtber &raquo;</TD></TR><TR><TD CLASS="quote">Incorrect, you can still log through the primary o2 sensor input.</TD></TR></TABLE>

Connecting wise, since the aem sensor sends the signal directly to the gauge, I just T off the signal and connect it to the input of the primary o2 of the ECU? That should cause the ECU to receive the signal from the aem sensor thus completely bypassing the OEM stock sensor? Since the output signal is different from the stock oem sensor and the aem, does the ECU read this new signal with no problem?

I appreciate the help, obviously a noob to all this. Ive already registered and searched through PGMFI. org but can't get clear answers without taking a couple hours to keep searching when i get quick answers here

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HRTuning &raquo;</TD></TR><TR><TD CLASS="quote">You can datalog it, you just can't see above 3.8v...</TD></TR></TABLE>

specifically what can i not see that requires the voltage to go above 3.8v? By datalogging and saving it, doesn't that back-up the map and tune burnt onto the chip? My goal is to backup the tune burnt onto the chip in case the tune in the chip gets erased and i can just burn it back onto the chip with my pc (with the chip burner too of course).

 

the only reason you'd ever need above 3.8V is if your wideband's output has a valuable reading with that voltage. Most don't.
In fact with most widebands, if you're getting 3.8V you need some serious fuel map editing anyway, so being able to log the exact value becomes pointless.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">the only reason you'd ever need above 3.8V is if your wideband's output has a valuable reading with that voltage. Most don't.
In fact with most widebands, if you're getting 3.8V you need some serious fuel map editing anyway, so being able to log the exact value becomes pointless.</TD></TR></TABLE>

yea, you are right but since my wideband still outputs 0-5v, i think it would be nice to have the ECU input also read 0-5v and after doing research, I found this

http://www.marklamond.co.uk/te...t.htm

that will allow you to modify the ECU to read 0-5v and people on PGMFI have proven the effectiveness of the mod.

 

That mod works just fine.

 

ok can someone please explain that mod in a shorter and slower( for us retards) version. Is there a kit that brings all the parts for this.

I will be taking the same steps by using the crome to get familure with tuning.

 

anyone

 

Just wondering, is it possible to bypass the Ecu and just connect the Aem Uego Wideband's serial output directly to the laptop (via serial to usb cable adapter) and run Freelog from there? Anybody done datalogging this way?

As oppose to connecting the Aem's analog output to the Ecu's primary 02, and then do the 0to5v mod, run cable from Ecu to laptop, so on...

 

there is a seperate output on the AEM UEGO for a serial output, a blue wire that you wired directly onto a RS-232 com port and use hyperterminal to log values. But no, you can't use it that way to work parallel with FreeLog or Come Pro's datalogging software

 

Very nice, thanks for clearing that up... glad to finally have an answer for that question.

So, what's the best way to hook up Aem Uego for datalogging, inorder to make it work with Freelog/Crome Pro?

Based from what I've read (hoping I read them correctly...lol),

On the Ecu --&gt; (delete J12) and also perform (0to5volt conversion -- for accurate A/F reading, etc...).

Use Aem Uego's supplied (analog output) --&gt; hook to Ecu's (Primary O2).
then from Ecu's (CN2 terminal) --&gt; plug in (Hulog Cable) --&gt; going to Laptop's (Usb port).

Am I on the right track?

 

Sounds like you are on the right track. on top of that, you will need to select the AEM UEGO under the wideband settings, easier with crome pro. In FreeLog, you have to input the voltage conversion of the values.

 

Sorry to bump this but where exactly is the Primary o2 sensor that you tap into.

Is it the PIN on the Plug?

Right now I have UEGO Output-->(NOthing)-->CN2-->Hulog-->Freelog via USB.

 

White wire, pin #D14.

Send voltage from your wideband to that wire on the harness, going into your ECU