sct datalogging AFR with AEM UEGO.....What equation?

[JANNETTYRACING]

Originally Posted by Z1 Dunn

I have sct on my FI and it's been 9.90's with no weight reductions. sct does work

And a Stack of Trophies to Prove it

[axis]

Originally Posted by JANNETTYRACING

There is No Better Software I have them all to choose from.

Ted.

But not everyone wants to be tied to a tuner to do EVERYTHING, no matter how small. Real time datalogging of a FI car is MUCH better than what the SCT has to offer.

[JANNETTYRACING]

I don't know who or what you have been told but ,You have been sadly misinformed.

SCT is real time data logging and as good as it gets.

Analog AFR gauges have to be set up in all of the logging software available to make sure the report accurately on the log.

[thahemp]

I have to agree axis. I never bought the tuning suite, but the data logging was sufficient with livelink. I can't speak to the application of logged data to the actual tune. I have only done that with HPT.

[Badbubba]

V*2+10=afr is the equation. Downloaded the .pdf manual. It does not appear to me that this wideband can be tested with the free air method. Page 6 states to unplug the sensor, 2.35 should be displayed on the meter and 2.35 volts should be measured on the analog output, white wire. If not 2.35 volts on the analog, than this offset needs to be accounted. Manual states about when using an AEMPro, to adjust the gain for the correct value. There is no provision on the meter itself for any adjustment. When using a third party software, the offset would need to be adjusted with livelink II. The offset in the equation would need changed. Also, what fuel are you using, straight gas, e10, blend or if torco is being used, what effect does it have on the stoichy. What stoichymetric value do you have programmed into your wideband?
Free air test for Innovate:
http://www.innovatemotorsports.com/r...ycalibrate.php

[BlownSS]

Originally Posted by Badbubba

V*2+10=afr is the equation. Downloaded the .pdf manual. It does not appear to me that this wideband can be tested with the free air method. Page 6 states to unplug the sensor, 2.35 should be displayed on the meter and 2.35 volts should be measured on the analog output, white wire. If not 2.35 volts on the analog, than this offset needs to be accounted.

this seems like a lot better idea than trying to get my eyes to focus on two different points and hope i see them at the exact same time and then make an educated guess as to what the offset truly is........I want this dialed in and to be as accurate as possible. Im going to run out and take a peek to see what the difference is.

[BlownSS]

this idea does not work. i unplugged it at the sensor and it reads a constant 14.8 on the gauge. if I JUST READ VOLTS FROM THE WHITE WIRE, i AM GETTING 1.67 VOLTS.... I set the standard equation at V*2+10=afr.........while logging at idle.....i get a reading of 13.4 on analog 1 constantly................Confused

this has to be the dumbest thing to figure out. Am I the only one who has gone through this frustration? I might be at the end of what I can do with remote tuning. I dont want to risk my motor because I cant figure out why the two reading dont match. Any input I put into Livelink could have catastrophic consequences if I am off on my equation..........Am I ovethinking this?

[LS7 427]

Originally Posted by axis

But not everyone wants to be tied to a tuner to do EVERYTHING, no matter how small. Real time datalogging of a FI car is MUCH better than what the SCT has to offer.

True to a point axis, using SCT you are tied to a tuner. Datalogging is where your missing out. Here's how I do it. My car runs consistent low 10's at +/- 5000 DA, I race the car competitively at our local NHRA track. Ted does my tuning, on race weekend I'll make 2 test and tune passes on Friday and datalog them, I send the logs to Ted Friday Night and he tweaks the tune and sends me back a revision Saturday morning. I load the new tune and datalog my first qualifying pass, then I look at the datalog myself and although I can't see what values Ted mave have changed I can see without question what affect it has had on the motor for the good or bad. If it's better I'll run it for the weekend, if not I'll load the previous tune and run that although I've yet to need to take that step backward. I send the Saturday/Sunday logs back to Ted Monday and he has a look and sets me up again for the next race. Having said all that my point is that datalogging in real time with SCT is very very adequate. I can analyze any given pass down to a gnat's ass...lol Hope that sheds some light on datalogging with SCT anyway.

Regards: Bryan

[LS7 427]

Originally Posted by BlownSS

this idea does not work. i unplugged it at the sensor and it reads a constant 14.8 on the gauge. if I JUST READ VOLTS FROM THE WHITE WIRE, i AM GETTING 1.67 VOLTS.... I set the standard equation at V*2+10=afr.........while logging at idle.....i get a reading of 13.4 on analog 1 constantly................Confused

this has to be the dumbest thing to figure out. Am I the only one who has gone through this frustration? I might be at the end of what I can do with remote tuning. I dont want to risk my motor because I cant figure out why the two reading dont match. Any input I put into Livelink could have catastrophic consequences if I am off on my equation..........Am I ovethinking this?

Do you have the Analog 2 wire grounded, if not, do it. I checked on the AEM equation and it is in fact (v*2)+10. Prosport uses the same equation, I've attached a chart with volts and corresponding Lambda and AFR outputs. Good luck.

Bryan
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.

[94guy]

Blown you have something wrong. I datalogged a car yesterday with sct and a/f. no problems.

[thahemp]

Originally Posted by BlownSS

this idea does not work. i unplugged it at the sensor and it reads a constant 14.8 on the gauge. if I JUST READ VOLTS FROM THE WHITE WIRE, i AM GETTING 1.67 VOLTS.... I set the standard equation at V*2+10=afr.........while logging at idle.....i get a reading of 13.4 on analog 1 constantly................Confused

this has to be the dumbest thing to figure out. Am I the only one who has gone through this frustration? I might be at the end of what I can do with remote tuning. I dont want to risk my motor because I cant figure out why the two reading dont match. Any input I put into Livelink could have catastrophic consequences if I am off on my equation..........Am I ovethinking this?

Move your gauge ground again. This is where I grounded mine in the driver's side fuse panel.



This is how I calculate my offset. Take a few pics like this and get an average offset. Ignore any values that are WAY off compared to the rest. I'm sure unplugging the sensor and reading the voltage works too once it's all functioning properly, but I find I have to adjust my offset from time to time with this wideband.

[BlownSS]

Originally Posted by LS7 427

Do you have the Analog 2 wire grounded, if not, do it. I checked on the AEM equation and it is in fact (v*2)+10. Prosport uses the same equation, I've attached a chart with volts and corresponding Lambda and AFR outputs. Good luck.

Bryan
.
.

So.....the analog 2 wire from the FireWire needs grounded also? Do I need to set an equation in leveling to read analog 2 as well?

[Badbubba]

Originally Posted by BlownSS

this idea does not work. i unplugged it at the sensor and it reads a constant 14.8 on the gauge. if I JUST READ VOLTS FROM THE WHITE WIRE, i AM GETTING 1.67 VOLTS.... I set the standard equation at V*2+10=afr.........while logging at idle.....i get a reading of 13.4 on analog 1 constantly................Confused

this has to be the dumbest thing to figure out. Am I the only one who has gone through this frustration? I might be at the end of what I can do with remote tuning. I dont want to risk my motor because I cant figure out why the two reading dont match. Any input I put into Livelink could have catastrophic consequences if I am off on my equation..........Am I ovethinking this?

Doesn't make sense. Do you have the model # of the guage?
For my Autometer cobalt I use the analog 1 input and use the anolog 2 input for a voltage feed back from an LNC 2000 for how much timing is being pulled. No issues reading voltage with live link. You stated you get 1.67 volts on the white wire when the sensor is unplugged. So then the live link is calculating at 13.4.

[LS7 427]

Originally Posted by BlownSS

So.....the analog 2 wire from the FireWire needs grounded also? Do I need to set an equation in leveling to read analog 2 as well?

Yes, if you are not using the analog 2 output, the wire should be grounded. No equation is necessary for the analog 2.

Bryan