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Free VE Table Corrections — Drop Your MSQ and a Datalog, I'll Do the Rest

Old Jun 6, 2026 | 11:09 PM
  #121  
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@Bloopdog Re-Ran yours as well.
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Old Jun 6, 2026 | 11:26 PM
  #122  
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Yo, I just installed some id1050x's and an afpr as of 10min ago. So I theoretically fixed my fueling issue. Once I get things rolling again, I'll throw you some logs. Currently struggling to stay running lol.
Old Jun 6, 2026 | 11:38 PM
  #123  
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Good deal. I'd start by smoothing your entire table in tuner studio as a base.
Old Jun 7, 2026 | 12:32 AM
  #124  
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Try and flash this it has your dead time and new injector settings. @matmsm
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updated.msq (293.5 KB, 2 views)
Old Jun 7, 2026 | 07:54 AM
  #125  
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Hey, I'll bite. If only for "science".
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Old Jun 7, 2026 | 09:34 AM
  #126  
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Rich across the board...

If you want to go another round up to you after this, drop your .msq along with new .csv. I am curious on a couple things that the extractor flagged.



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rwyatt365_VE.txt (1.3 KB, 5 views)
Old Jun 7, 2026 | 07:24 PM
  #127  
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Originally Posted by X-Cam34
Rich across the board...

If you want to go another round up to you after this, drop your .msq along with new .csv. I am curious on a couple things that the extractor flagged.
Round 2...Just cruising, no WOT pull(s), but I did get into 200+kpa at part throttle at one point. I've included ther MSQ file this time.
Attached Files
File Type: csv
2026-06-07_12-22-11_rwyatt.csv (19.31 MB, 2 views)
File Type: msq
Rwyatt.msq (286.4 KB, 4 views)
Old Jun 7, 2026 | 08:35 PM
  #128  
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Your Mat Corrections are backward, you are adding fuel when warm.... My extractor correctly flagged it.

Below 100 you remove fuel, above you add, you have the inverse going on. That is exactly why you are rich across the board.

I took the MAT curve from the base tune for a miata from here and added it to your tune. https://trubokitty.com/#/tune

I also put your fuel back to the original one you started with, if I pull fuel from that table then it will cause you to be lean -- not sure how long this has been on your tune, but I'd rather start at the base line that you came in with so there will be no issue stemming from anything I did .

Now that you have your original table back in and the MAT no longer adding fuel when it should be removing it, you can log again and we will try and dial in your VE table where we are not chasing phantom fueling issues....




Edit:

Here is a link from this forum explaining....

https://www.miataturbo.net/megasquir...ok-like-89026/

Section 8.16 in the .pdf I uploaded explains what I am talking about.
Attached Files
File Type: msq
Rwyatt_MAT-change.msq (274.4 KB, 5 views)

Last edited by X-Cam34; Jun 7, 2026 at 09:37 PM. Reason: Adding links
Old Jun 8, 2026 | 10:49 AM
  #129  
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Originally Posted by X-Cam34
Your Mat Corrections are backward, you are adding fuel when warm.... My extractor correctly flagged it.

Below 100 you remove fuel, above you add, you have the inverse going on. That is exactly why you are rich across the board.

I took the MAT curve from the base tune for a miata from here and added it to your tune. https://trubokitty.com/#/tune

I also put your fuel back to the original one you started with, if I pull fuel from that table then it will cause you to be lean -- not sure how long this has been on your tune, but I'd rather start at the base line that you came in with so there will be no issue stemming from anything I did .

Now that you have your original table back in and the MAT no longer adding fuel when it should be removing it, you can log again and we will try and dial in your VE table where we are not chasing phantom fueling issues....




Edit:

Here is a link from this forum explaining....

https://www.miataturbo.net/megasquir...ok-like-89026/

Section 8.16 in the .pdf I uploaded explains what I am talking about.
I'm aware that my MAT correction is "from the upside-down". I was experiencing a situation where t was leaning out when the ambient temps started climbing and I spent a LOT of time trying to correct it via the VE table, with no success until I inverted the MAT correction. I'll revert to your "correction" but if I see that same condition again, then I'll go back to the upside-down and move on with life.

I don't know if this is relevant, but I have converted my NB1 to a full-return system and I also have a rising-rate FPR in there to account for increasing the fuel pressure under boost. I don't know if any of that has any bearing on the MAT correction, but I didn't have this issue with the AFRs going lean when the IATs get high (especially when the ambient temps are high) until I went full-return and put in the RRFPR.
Old Jun 8, 2026 | 11:01 PM
  #130  
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Going over your tune I think I found the issue:
  • MAPdot never exceeds 934 kpa/sec, and 99% of it is under 350. Frames above 1000: zero. So bins at 1285/1719/2240 fire literally never.
  • TPSdot never exceeds 520 %/sec, 99% under 270. Frames above 800: zero. So bins at 821/1310/1834/2296 fire never.
Impossible numbers.

So if you want, after you change the mat, put your original fuel table, make the changes to your AE curve, then we can re-log and tune your VE table,









================================================== ================================================== ================================================

I suggest that you set them like this:




Attached Files
File Type: txt
rwyatt_AE_rebinned.txt (265 Bytes, 2 views)

Last edited by X-Cam34; Jun 8, 2026 at 11:02 PM. Reason: The .txt file you can copy and paste direct....
Old Yesterday | 07:31 AM
  #131  
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Originally Posted by X-Cam34
Going over your tune I think I found the issue:
  • MAPdot never exceeds 934 kpa/sec, and 99% of it is under 350. Frames above 1000: zero. So bins at 1285/1719/2240 fire literally never.
  • TPSdot never exceeds 520 %/sec, 99% under 270. Frames above 800: zero. So bins at 821/1310/1834/2296 fire never.
Impossible numbers.

So if you want, after you change the mat, put your original fuel table, make the changes to your AE curve, then we can re-log and tune your VE table,
I'll re-bin the AE tables, but FYI I'm using EAE to do the accel enrichments so I quit bothering with AE a long time ago, so the TPSdot and MAPdot tables are not contributing anything (?) with EAE enabled. I know that 99% of the time, I have a "lazy foot" when cruising in traffic, so the 'dot numbers will be very low. Anyway, I'll put in your changes and reset the VE table and we'll go from there. It's a "Rainy Night In Georgia" today and I've got some other things going on, so it might be a couple of days before I can post any updates.

TLDR - I'm going to back-track on your comments on the MAT enrichment. The reasoning behind my "tampering" with that table was that when I tuned my idle AFRs to perfection in the winter - when ambient temps would be in the 40s and 30s. Then in the summer when the ambient temps drifted into the 80s and 90s, my idle AFRs would go lean. I'd adjust that and then when the cold temps returned, my idle AFRs would go rich again. After tearing out what little hair I had left, I asked the question, "What parameter could I use to add fuel when the temps are hot and pull fuel when the temps are cold?" That's when I "found" the MAT air density table". I knew that what I was doing was counter to accepted wisdom, but changing that table to be the inverse of what everyone else was doing made my seasonal VE table changes a thing of the past. Now, I'll put in "the correct " MAT table and then see what happens when the temps drop 6 months from now... (Maybe I'll start a thread to that point - "for science")
Old Yesterday | 08:29 PM
  #132  
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Ok, I'd like some new data from you as soon as you can.

Just one thing that is not the way you solve that issue. At the very least have an idle VE for winter and one for summer, but adjusting the mat curve to pull or add fuel in certain weather summer winter is the best way to go about it, you had that thing just constantly slamming you with fuel, which is not good does your oil smell like gas? There is a real issue with over fueling like that. I've just made another update to the tool it is in the final phases now....

Get me the data when you have time and we can discuss the mat curve to compensate for your issues, but we will use it the correct way this time. What you did was a blanket fix that could potentially cause damage to the motor,


================================================== =====================

https://oards.com/oil-smells-like-gas/
https://carparts.com/blog/common-rea...ells-like-gas/
https://shieldoils.com/engine-oil-sm...oms-and-fixes/
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