SCT Datalogging = Must be rocket scientist to use....

[True Blue Aggie]

WTF.....Data logging on this device is the suck. Or at least setting it up to data log is. Terry, at worst I am going to get you to set up the data logging on it at FFW Houston.

that is all......:flaming:

[Aggie Mom]

When I was helping Jackie’s husband Mykel datalog his cobra we had no problems

All we did was turn the key on and open the XC2live hit the graph button in the upper left and pick what to log. Hit the record button and it worked.
He sent this screenshot
Hope this helps – Happy Easter
Aggie Mom

[L8 APEX]

Logging to the device and to laptop are two different things. To laptop is a lot easier. Bob (PUMP) has figured it out maybe he can give a tutorial. I have been arguing with SCT for 3 weeks now on my software issues! I have not had time to do device logging myself yet, I understand it is frustrating. I will ask them if there are any tricks to it.

[Silver_2000]

Ok Terry what updates need to be done to the device to allow on device logging ? I have the SCT but it doesnt have any choices on screen to log.
Or do I not have the right device ?

None of the updates on SCTFlash indicate that they would work for adding on device logging

The list of software on the SCTflash site is presented as if its a SCTFlash developers download page - NO detail on how to install what one version does instead of the other ... Typical POOR documentation - Same problem the racers package had

Doug

EDIT - Hang on I uess I need to flash the truck back to stock then update to LiveUpdate 2 then see if that worked .. Now that the coffee is kicking in it makes a little more sense

[dboat]

Ok Terry what updates need to be done to the device to allow on device logging ? I have the SCT but it doesnt have any choices on screen to log.
Or do I not have the right device ?

None of the updates on SCTFlash indicate that they would work for adding on device logging

The list of software on the SCTflash site is presented as if its a SCTFlash developers download page - NO detail on how to install what one version does instead of the other ... Typical POOR documentation - Same problem the racers package had

Doug

EDIT - Hang on I uess I need to flash the truck back to stock then update to LiveUpdate 2 then see if that worked .. Now that the coffee is kicking in it makes a little more sense

Would this give me an accurate f/a ratio?

[PUMP]

Would this give me an accurate f/a ratio?
According to Terry, NO. You can get MAF count, fuel demand (banks 1 and 2)., Oxygene sensor output. The fuel demand just tells you that fuel is being added or subtracted. It is possible to load the data into an Excel spread sheet and then calculate A/F ratio. But as to real time A/F - NO.:mad:
Looks like a A/F meter is the only way.

[dboat]

According to Terry, NO. You can get MAF count, fuel demand (banks 1 and 2)., Oxygene sensor output. The fuel demand just tells you that fuel is being added or subtracted. It is possible to load the data into an Excel spread sheet and then calculate A/F ratio. But as to real time A/F - NO.:mad:
Looks like a A/F meter is the only way.


dangit

[L8 APEX]

If you record the actual b1s1 and b2s1 02 seonsor outputs and do the lamda coversion that is your A/F .82 is 12:1 etc..
You have to update your firmware to 1.10 or higher. There is a how to on the SCT website.
LiveUpdate 2:http://www.sctflash.com/images/download.jpg (http://www.sctflash.com/software/SCTSFupdateInstall.exe)Application: 9400 Custom Tuner or 9415 SF Strategy Flash DeviceThis program is used to update an XCalibrator 2 and XCalibrator 2 SF to the latest firmware release. Click Here for Instructions on Updating your firmware. (http://www.sctflash.com/software/firmware_update.pdf)Click Here To Download (http://www.sctflash.com/software/LiveUpdate2.exe)Click Here to download the firmware (http://www.sctflash.com/software/xcal2f-V1.11.lu2)Version:1.11Click Here for Instructions on using the On-Device Datalogging (http://www.sctflash.com/software/Configuring%20Datalogging.pdf)

[WA 2 FST]

If you record the actual b1s1 and b2s1 02 seonsor outputs and do the lamda coversion that is your A/F .82 is 12:1 etc..
You have to update your firmware to 1.10 or higher. There is a how to on the SCT website.
LiveUpdate 2:http://www.sctflash.com/images/download.jpg (http://www.sctflash.com/software/SCTSFupdateInstall.exe)Application: 9400 Custom Tuner or 9415 SF Strategy Flash DeviceThis program is used to update an XCalibrator 2 and XCalibrator 2 SF to the latest firmware release. Click Here for Instructions on Updating your firmware. (http://www.sctflash.com/software/firmware_update.pdf)Click Here To Download (http://www.sctflash.com/software/LiveUpdate2.exe)Click Here to download the firmware (http://www.sctflash.com/software/xcal2f-V1.11.lu2)Version:1.11Click Here for Instructions on using the On-Device Datalogging (http://www.sctflash.com/software/Configuring%20Datalogging.pdf)

This is where I still take issue with datalogging O2 voltages and then trying to figure what voltage = what A/F ratio. Even with the more sophisticated PCMs today, its still not a wide-band sensor that the PCM is taking readings from. The difference b/w .90v and .82v is negligible using OEM type O2 sensors.

What may be X from one sensor may be something completely different from another. I would have to have LOTS of datalogging with a wide-band riding shotgun to feel comfortable using the OEM sensors to really tell me what my real A/F ratio is.

IMHO, the only real way is with a wide-band sensor...and those do not last as long, and cost more $$ to replace, as you all know.

[L8 APEX]

You are right Wes it is like something we all know but some don't want to $$ for. The answer is pretty straight if you want to know A/F buy a wideband. Though it seems some folks want to pull it from cheap, inacurate OEM sensors for free.

[Silver_2000]

You are right Wes it is like something we all know but some don't want to $$ for. The answer is pretty straight if you want to know A/F buy a wideband. Though it seems some folks want to pull it from cheap, inacurate OEM sensors for free.
Its likley better than nothing

[Silver_2000]

I screwed around with the software today - Got the Xcal to capture data but its not pretty
I was getting errors trying to save the .dlf file to the xcal so it knew which sensors to let me pick from
I had to pick the fake com port the USB was connected to mine was com 10
I found it by looking in device manager for the USB serial port under ports
Then I was able to get the sct to log but a bunch of the sensors showed either no data or wrong data
Load was .5 which is wrong
The MAf voltage didnt change
the trans temp showed between 300 and 500 degrees depending on when I hooked it up - sincethe truck was OFF it should have been near 100 degrees
Dont forget you have to hook the SCT to the pc to suck the data out to see it after you log....
The live update programs then started crashing when I tried reading the next group of data from.

[WA 2 FST]

Its likley better than nothing

I don't mean to be harsh, but how good can it be? The OEM O2 function is to make sure you're at/around stoich under closed loop operation (after engine warm up, and at idle and part-throttle conditions). The O2s are only accurate in and around 14.7:1. As you know voltages over .49 = "rich", and those lower = "lean"... using 14.7:1 as the median. Since the design of the OEM O2 doesn't allow it to be accurate (b/c its not needed) in a threshold very much outside of +/-14.7:1, then it is very difficult to say that at .XX voltage = XX.X:1 A/F ratio. The stock PCM doesn't see .98v as any different than .85v...or at least not at WOT as far as the fuel map tables are concerned. Any "gauge" using this data isn't going to tell you a lot, if anything. Sure, it should be in the "rich scale" at WOT. If its not, you're blown engine already grenaded. I just would hate for anyone to get a warm, fuzzy feeling over seeing all the green LEDs light up and actually think they are near their target A/F ratio. The fact is, they _might_ be :), but they also might _not_ be. :(

This will all change once the govt. requires vehicle manufacturers to keep tabs on WOT fuel management for emissions purposes. Right now, it can be as rich/lean as the engine management engineers desire. But, once that part of tuning is regulated (and it will happen eventually), then you'll see wide-bands on everything coming out of the factory.

[QDRHRSE]

It took a few hours but I figured it out today. I logged directly on to my PC. It's too bad the instructions they give you are so lame. It's super easy. I think that I could walk somebody through it in a few minutes. There are so many things that you can log that it's confusing....but really easy. If you need help let me know. I could probably do it over the phone.

[L8 APEX]

Somebody try logging through the device to a laptop via the livelink software. I think it will be more like a Raptor which I use for logging. It is fast and consistent.

[PUMP]

I don't mean to be harsh, but how good can it be? The OEM O2 function is to make sure you're at/around stoich under closed loop operation (after engine warm up, and at idle and part-throttle conditions). The O2s are only accurate in and around 14.7:1. As you know voltages over .49 = "rich", and those lower = "lean"... using 14.7:1 as the median. Since the design of the OEM O2 doesn't allow it to be accurate (b/c its not needed) in a threshold very much outside of +/-14.7:1, then it is very difficult to say that at .XX voltage = XX.X:1 A/F ratio. The stock PCM doesn't see .98v as any different than .85v...or at least not at WOT as far as the fuel map tables are concerned. Any "gauge" using this data isn't going to tell you a lot, if anything. Sure, it should be in the "rich scale" at WOT. If its not, you're blown engine already grenaded. I just would hate for anyone to get a warm, fuzzy feeling over seeing all the green LEDs light up and actually think they are near their target A/F ratio. The fact is, they _might_ be :), but they also might _not_ be. :(

This will all change once the govt. requires vehicle manufacturers to keep tabs on WOT fuel management for emissions purposes. Right now, it can be as rich/lean as the engine management engineers desire. But, once that part of tuning is regulated (and it will happen eventually), then you'll see wide-bands on everything coming out of the factory.

RIGHT ON.
As shown on the graph in the attached pdf, the Lambda value in the rich area is dependant upon temperature. OEM O2 sensor is worthless for performance tuning.

[Silver_2000]

compared to someone who has NO information at all any information or at least the quest for information is better than none

[dboat]

compared to someone who has NO information at all any information or at least the quest for information is better than none
+1

[Silver_2000]

Somebody try logging through the device to a laptop via the livelink software. I think it will be more like a Raptor which I use for logging. It is fast and consistent.

Looks like cathy posted a screen shot from Livelink

[QDRHRSE]

Somebody try logging through the device to a laptop via the livelink software. I think it will be more like a Raptor which I use for logging. It is fast and consistent.

I did. Pretty amazing how much stuff there is to look at.