1991 NA6 Miata (Stock)

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fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

So I finally got time to install the new unit from @stefanst . And yes, it cranked up in 3 seconds and idled without issue. I have to buy a wideband before actually running the car with it since I don't want to run in blind, but this is already looking great!
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

Just put on all the electronics for the wideband. However the old o2 sensor is seized - probably hasn't been replaced in 20 years lol.

Put some WD-40 on the bung last night and will try again today, hope the best.
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

Wideband is installed :) Took a last-minute drive to Walmart for the last open hour for Christmas supplies. Issue: the engine tends to stall when releasing the throttle abruptly (4000rpm to idle, for example). Happened 3 times in my ~2mile drive in heavy traffic. I am still using the stock TPS, maybe that could be an issue?

Uploaded latest tune (using TunerStudio autotune) and logs here:

https://rusefi.com/online/index.php?vehicleName=Miata&user_id=1253&sorts[uploadedMsq]=-1&sorts[uploadedLog]=-1
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AndreyB
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Re: 1991 NA6 Miata (Stock)

Post by AndreyB »

Please start a new thread in https://rusefi.com/forum/viewforum.php?f=16 for "Deceleration settings" - I assume the term for what you are experiencing is deceleration.

You can really help us if you can report such issues one by one and try suggested solutions and report back.

And yes I would assume that proper TPS would help. Are you running MAP sensor already or still VAF vane door sensor?

I guess technically maybe we could find better ways to handle deceleration even with all stock sensors.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

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fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

I need help. Today I updated the firmware in my MRE48 to the latest, and suddenly I am getting trigger errors at about 3000rpm.

I checked everything and it does not work...

@AndreyB

Below 3000 it works fine, but once it hits 3000 this is printed in the console and engine loses sync:

Code: Select all

2022-04-13_19_06_16_282: EngineState: TRG rpm=1977 time=5844 eventIndex=3 gapIndex=1: gap=0.332 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_284: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_284: EngineState: TRG rpm=1977 time=5844 eventIndex=6 gapIndex=0: gap=0.498 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_285: EngineState: TRG rpm=1977 time=5844 eventIndex=6 gapIndex=1: gap=4.062 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_285: EngineState: TRG duty 817.555358886 49624
2022-04-13_19_06_16_286: EngineState: TRG rpm=1977 time=5844 eventIndex=9 gapIndex=0: gap=1.534 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_286: EngineState: TRG rpm=1977 time=5844 eventIndex=9 gapIndex=1: gap=0.498 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_287: EngineState: TRG duty 817.555358886 49624
2022-04-13_19_06_16_288: EngineState: TRG rpm=1977 time=5844 eventIndex=11 gapIndex=0: gap=0.331 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_288: EngineState: TRG rpm=1977 time=5844 eventIndex=11 gapIndex=1: gap=1.534 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_381: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_382: EngineState: TRG rpm=1915 time=5844 eventIndex=3 gapIndex=0: gap=4.059 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_382: EngineState: TRG rpm=1915 time=5844 eventIndex=3 gapIndex=1: gap=0.331 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_382: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_382: EngineState: TRG rpm=1915 time=5844 eventIndex=6 gapIndex=0: gap=0.497 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_383: EngineState: TRG rpm=1915 time=5844 eventIndex=6 gapIndex=1: gap=4.059 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_383: EngineState: TRG duty 813.874938964 51000
2022-04-13_19_06_16_383: EngineState: TRG rpm=1915 time=5844 eventIndex=9 gapIndex=0: gap=1.541 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_383: EngineState: TRG rpm=1915 time=5844 eventIndex=9 gapIndex=1: gap=0.497 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_386: EngineState: TRG duty 813.874938964 51000
2022-04-13_19_06_16_386: EngineState: TRG rpm=1915 time=5844 eventIndex=11 gapIndex=0: gap=0.331 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_386: EngineState: TRG rpm=1915 time=5844 eventIndex=11 gapIndex=1: gap=1.541 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_388: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_388: EngineState: TRG rpm=1859 time=5844 eventIndex=3 gapIndex=0: gap=4.053 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_388: EngineState: TRG rpm=1859 time=5844 eventIndex=3 gapIndex=1: gap=0.331 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_391: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_391: EngineState: TRG rpm=1859 time=5844 eventIndex=6 gapIndex=0: gap=0.497 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_391: EngineState: TRG rpm=1859 time=5844 eventIndex=6 gapIndex=1: gap=4.053 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_488: EngineState: TRG duty 812.723815917 52462
2022-04-13_19_06_16_488: EngineState: TRG rpm=1859 time=5844 eventIndex=9 gapIndex=0: gap=1.544 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_488: EngineState: TRG rpm=1859 time=5844 eventIndex=9 gapIndex=1: gap=0.497 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_489: EngineState: TRG duty 812.723815917 52462
2022-04-13_19_06_16_489: EngineState: TRG rpm=1859 time=5844 eventIndex=11 gapIndex=0: gap=0.331 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_489: EngineState: TRG rpm=1859 time=5844 eventIndex=11 gapIndex=1: gap=1.544 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_489: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_489: EngineState: TRG rpm=1806 time=5844 eventIndex=3 gapIndex=0: gap=4.073 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_489: EngineState: TRG rpm=1806 time=5844 eventIndex=3 gapIndex=1: gap=0.331 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_16_489: EngineState: TRG duty 0.000000000 0
2022-04-13_19_06_16_489: EngineState: TRG rpm=1806 time=5844 eventIndex=6 gapIndex=0: gap=0.498 expected from 0.100 to 0.500 error=Yes
2022-04-13_19_06_16_489: EngineState: TRG rpm=1806 time=5844 eventIndex=6 gapIndex=1: gap=4.073 expected from 0.600 to 2.299 error=Yes
2022-04-13_19_06_27_819: EngineState: float @468 is 0.00000
mck1117
running engine in first post
running engine in first post
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Re: 1991 NA6 Miata (Stock)

Post by mck1117 »

Can you post a regular tunerstudio log to rusefi.com/online? Be sure to set the logging rate to maximum.
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

I flashed back to the older version (2020.9) as it's my daily, but I can upload the log in a few days.
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

It appears the RusEFI online upload is broken. I cannot upload anything so I'll just paste my tune here:
Attachments
2022-04-14_11.14.37.mlg.zip
(234.26 KiB) Downloaded 30 times
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AndreyB
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Re: 1991 NA6 Miata (Stock)

Post by AndreyB »

fan wrote:
Thu Apr 14, 2022 3:33 pm
It appears the RusEFI online upload is broken.
Let's be more specific to make this exchange overall more productive. I was able to upload your tune at https://rusefi.com/online/view.php?msq=950
thus I've removed attachment. Please upload from under your username to reduce confusion and provide URL.

Please explicitly state what issues are you having with log upload.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

AndreyB wrote:
Thu Apr 14, 2022 4:56 pm
fan wrote:
Thu Apr 14, 2022 3:33 pm
It appears the RusEFI online upload is broken.
Let's be more specific to make this exchange overall more productive. I was able to upload your tune at https://rusefi.com/online/view.php?msq=950
thus I've removed attachment. Please upload from under your username to reduce confusion and provide URL.

Please explicitly state what issues are you having with log upload.
Hi Andrey,

I am finally able to upload:

https://www.rusefi.com/online/view.php?log=747

The tune is
https://rusefi.com/online/view.php?msq=953

Thanks!
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

Sorry, forgot to state the exact problem... The exact issue is that once the RPM hits about 3000rpm the engine will not rev up any more and the trigger error count keeps going up. Using the same configuration and 202008 firmware there is no such problem. Once the engine goes below 3000rpm everything becomes normal again, and this pattern repeats itself.
fan
Posts: 46
Joined: Tue Jul 07, 2020 8:42 pm
Location: Georgia USA

Re: 1991 NA6 Miata (Stock)

Post by fan »

Pinging @stefanst for help. It may be some kind of HW revision issue (I had to swap the injection wires to match the old config v.s. the NA6 preset)
image.png
image.png (114.61 KiB) Viewed 1417 times
But after that everything looks good until I hit 3000rpm, and I get trigger errors.
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