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Aem 30-4110 wideband reading differently on tunerstudio vs gauge

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Aem 30-4110 wideband reading differently on tunerstudio vs gauge

 
Old 11-05-2017, 02:31 PM
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Default Aem 30-4110 wideband reading differently on tunerstudio vs gauge

Ok! Finally got the mazdaspeed started today after installing the mspnp pro and aem wideband... it's been a journey of stupid issues to this point, but it seems as if I at least have the car and gauge up and running and communicating with each other and my laptop.

The issue that im having is that the gauge reading and the tunerstudio readings don't match (off by at least 1 point) . I have the gauge grounded to pin A, and signal (white wire) to pin C, power coming from the power window 12v source. When I go to the drop down menus for uego selection, it doesn't list the 30-4110 sensor/gauge. So I assume I have to use the custom linear wideband option and configure it manually. (I have tried both aem selections available and neither seem to sync things up)

my aem gauge reads 10-10.1 far at idle, and the tunerstudio gauge reads 11 or so in its current configuration. Both gauges do respond to changes in afr i so both are getting signal from the sensor itself.

any guidance/flaming is appreciated, I'd like to get things working correctly so I can really get a chance to play with this thing
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Old 11-05-2017, 02:59 PM
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You need to calibrate the sensor on tunerstudio. Do a search, there are tons of threads on this.

Let me try to find the recent one where Aidan and Brain helped me out.

Edit: Here's the thread: https://www.miataturbo.net/megasquir...ettings-92849/
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Old 11-05-2017, 03:49 PM
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Thanks! I'll try the values listed in the thread, I've been reading and it seems aem's published values are wrong
don't know how I missed that thread in my searching
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Old 11-05-2017, 04:52 PM
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This is why I spent the extra $20 on the 03-0300 and plan to feed the wideband signal over CAN... Don't have to mess with this calibration nonsense.
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Old 11-05-2017, 05:50 PM
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Originally Posted by airbrush1 View Post
Thanks! I'll try the values listed in the thread, I've been reading and it seems aem's published values are wrong
don't know how I missed that thread in my searching
No problem. I asked the question there and it helped me out so I feel obligated to post a link every time it comes up again!
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Old 11-06-2017, 12:34 AM
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Originally Posted by Uncle Humjaba View Post
This is why I spent the extra $20 on the 03-0300 and plan to feed the wideband signal over CAN... Don't have to mess with this calibration nonsense.
Using the can module? Good luck with that.

I don't really see why people are so overwhelmed by this: you adjust 2 values until the numbers match up. linear curve. takes 10 minutes
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Old 11-06-2017, 01:28 AM
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Yup. Not a huge deal at all.

So easy, I could do it!
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Old 11-06-2017, 05:53 AM
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I just had this issue with my AEM X-Series. I fixed mine by selecting the correct WB in the EGO Sensor drop down in the Calibrate AFR Table menu.
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Old 11-06-2017, 06:17 AM
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Originally Posted by 18psi View Post
Using the can module? Good luck with that.

I don't really see why people are so overwhelmed by this: you adjust 2 values until the numbers match up. linear curve. takes 10 minutes
it's just a huge pain in the *** when the manufacturer gives you the wrong numbers to input
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Old 11-06-2017, 10:38 AM
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I don't think that's the actual issue.

I think the actual issue is that every Miata has huge variances between voltage, grounds, noisy signals, and then you also have different installs tapping into different power and ground sources, etc.

I've had to install various widebands into Miata's and this isn't just limited to aem, and different cars/installs required different voltage offset corrections.
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Old 11-06-2017, 05:19 PM
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New issue, tunerstudio isn't following changes in the wideband readings at all now, I think I have a problem with the output itself. At this point, if I unplug the sensor from the gauge and force it to read/output a 14.7 afr, tunerstudio doesn't even see that. Looks like I'll be taking things apart again tomorrow and measuring to see if the gauge is even sending a signal to the ms at all. Not sure why this issue could have developed overnight with no other changes unless I have a faulty gauge/controller
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Old 11-06-2017, 05:49 PM
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Ok so the gauge is outputting 2.37v @ 14.7 afr with the sensor disconnected, and it is outputting voltage with it connected as well. The plot thickens
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Old 11-11-2017, 08:13 AM
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Originally Posted by 18psi View Post
Using the can module? Good luck with that.

I don't really see why people are so overwhelmed by this: you adjust 2 values until the numbers match up. linear curve. takes 10 minutes
No, the x-digital has CAN output built in. Connects directly to the canh and canl lines on the megasquirt, requires no calibration. I went through the same exercise on my lc2 (analog calibration) and was never confident the calibration didn't change with conditions - rpm, battery voltage, etc

Last edited by Morello; 11-12-2017 at 01:14 PM.
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Old 11-11-2017, 11:39 AM
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That's pretty cool. I'll have to check that out
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Old 11-11-2017, 12:11 PM
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That does sound pretty nice to deal with
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