Ok, here is a pic of my dual wideband log.

I was looking at it and noticed they aren't the same and look quite a bit off based on the lines BUT if you look at the reading they are only .1 away from each other.

So, wideband 1 is on the 13 a/f line and wideband 2 is on the 14.5 line but the numbers say wideband 1 is 14.6 and wideband 2 is 14.5.

What the H is going on with this thing?

 

Two different axis? Click on the logged channel to update the axis to that channel.

 

I'm confused. Is there an update area when I click on the channel? If u mean to just select it ived clicked back and forth between the two and nothing has changed in the logs.

 

Send me the log, I'll have a look.

 

Weird - looks like a bug in the data logger.

 

that's what i thought. so i'm not sure which to trust, the lines or the display numbers. I've been trusting my displays because currently i don't have any gauges hooked up so i've been rolling around with my laptop.

i just rebooted my laptop so i'll check the log again and see if it makes a difference.

 

nope, after the reboot it didn't change anything. I actually found another place too.

This picture shows that the a/f is exactly 14.0 on each channel but the lines are a whole point off. Kind of strange.

I'm wondering now if my bank to bank differences that i've always had was just the fact that the trace lines are off and i never checked the actual a/f level.

Later today i'll try to uninstall and re-install the haltech software.

 

why not look at the raw csv file.

 

That's what this is from. Do you mean look at it in another program?

 

open the file in excel and see if they are 14.5 or not in the same spot

 

ya, i opened it in excel and none of the log channels are labeled and i have no idea what units it is in so it's basically pointless. It says "lambda" has a max/min of 2000. Last i knew lambda was set at 1 and then goes up and down from there. Plus i have no idea which column it refers to since they aren't labeled.

 

here is the csv file if you want to look. There is nothing in that mess of numbers that resembles the a/f i'm seeing in this log.

 

Jeff, just checked out your csv in log viewer... it is an axis difference. Click the "Calibrations - O2 sensor" up top to change which line is bolded and the corresponding axis is displayed.

O2 1 is 10.5 - 16, and O2 2 is 10.5 to 18.

 

ok, so i change the filter on them to match?

hmm, once would think it should match them when you do an overlay but i guess not.

This looks even worse now that i have them lined up. Some places are 2 points difference in a/f between banks. what is really going on with this car now....

 

weird, when i opened my csv logs, it was all labeled. i used excel to make my charts over the logger.

 

Idk, maybe my Excel is messed up. Take a peek and see if they are properly labeled on your Excel.

 

I recently had issues with a/f ratios between the banks. It turned out to be an exhaust leak, on bank two, three bolt flange. It caused all kinds of issues when it comes to a/f ratios.

 

Ya, I've thought about that but I've had these on and off about 5 times now with new Gaskets and this last time.even used copper gasket spray as well has my 1/2" drive breaker bar to tighten them down. It would be strange that I had the same Af differences after doing the exhaust multiple times unless the leak isn't at the gasket.

 

ohh duh, i'm thinking about my cipher logs...

no way to make the axis the same. when you adjust so 2 points match their numerical value, the next spot down the log doesnt match up.

By numerical value, there is no difference. That's what I would go by

 

Ya, I'm just going to use.numerical value. I did find some points that were 2 full points off though. Wasn't in boost so I don't think I should worry much.