Search found 46 matches

by fan
Mon Apr 25, 2022 4:46 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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)
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But after that everything looks good until I hit 3000rpm, and I get trigger errors.
by fan
Tue Apr 19, 2022 6:25 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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...
by fan
Sun Apr 17, 2022 4:14 pm
Forum: You and your build
Topic: 1993 Mazda Miata
Replies: 73
Views: 18626

Re: 1993 Mazda Miata

If you don't remove R22 the values will fluctuate because of unstable voltages, but it's perfectly usable

Also I did the pinout swap, but the values are still backwards :P
by fan
Sun Apr 17, 2022 4:08 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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....
by fan
Thu Apr 14, 2022 3:33 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

It appears the RusEFI online upload is broken. I cannot upload anything so I'll just paste my tune here:
by fan
Thu Apr 14, 2022 12:43 am
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

I flashed back to the older version (2020.9) as it's my daily, but I can upload the log in a few days.
by fan
Wed Apr 13, 2022 11:09 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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: 2022-04-13_19_06...
by fan
Thu Jul 29, 2021 8:42 pm
Forum: Tuning Support: Making it Run
Topic: [NA6 1991 Miata, MRE48] How to convert to Kia TPS
Replies: 13
Views: 6509

Re: [NA6 1991 Miata, MRE48] How to convert to Kia TPS

I am very confused: a) resistors with three wire pots? why? b) swapping pins? pots do not care if we swap GND and power? I am a software guy so it's easy to get me confused but still :) Let me explain: the KIA TPS POT has 3 pins, 1 2 3 -> CENTER LEFT RIGHT. The stock harness will connect 1 to WOT, ...
by fan
Wed Jul 28, 2021 11:50 pm
Forum: Tuning Support: Making it Run
Topic: [NA6 1991 Miata, MRE48] How to convert to Kia TPS
Replies: 13
Views: 6509

Re: [NA6 1991 Miata, MRE48] How to convert to Kia TPS

please help by pointing at exact pages or diagrams which do not look right to you https://github.com/rusefi/rusefi/wiki/Miata-NA-48-pin-board-for-MRE should be updated: KIA TPS is now tested. Need to swap the pin 1 and pin 3 of the TPS connector. Also the 10K pull-up resistor should be replaced wit...
by fan
Thu Jul 22, 2021 7:09 pm
Forum: Tuning Support: Making it Run
Topic: [NA6 1991 Miata, MRE48] How to convert to Kia TPS
Replies: 13
Views: 6509

Re: [NA6 1991 Miata, MRE48] How to convert to Kia TPS

OK. I reversed the top and bottom pins on the TPS connector. Now it works. However the 10K resistor is too high for a proper pull-up for the KIA sensor.

@Andrey maybe this should be updated to the wiki?
by fan
Sun Jul 18, 2021 12:40 am
Forum: Tuning Support: Making it Run
Topic: [NA6 1991 Miata, MRE48] How to convert to Kia TPS
Replies: 13
Views: 6509

Re: [NA6 1991 Miata, MRE48] How to convert to Kia TPS

image.png
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Also, I think JP53 in the comments here is incorrect?
by fan
Sun Jul 18, 2021 12:15 am
Forum: Tuning Support: Making it Run
Topic: [NA6 1991 Miata, MRE48] How to convert to Kia TPS
Replies: 13
Views: 6509

Re: [NA6 1991 Miata, MRE48] How to convert to Kia TPS

Just tried the KIA TPS, it does not work sadly... Don't know why yet.

@stefanst
by fan
Tue Jul 13, 2021 7:10 pm
Forum: You and your build
Topic: 1991 Miata [Hellen]
Replies: 34
Views: 8998

Re: 1991 Miata

BeerMoneyMotorsports wrote:
Sun Jun 06, 2021 7:34 pm
Going out tomorrow
OMG this new version is so cool!

---Weeping with my MRE48 sitting in the OEM ECU box with a cut-out for USB cable
by fan
Thu Dec 31, 2020 9:03 pm
Forum: Tuning Support: Making it Run
Topic: [NA6 1991 Miata, MRE48] How to convert to Kia TPS
Replies: 13
Views: 6509

[NA6 1991 Miata, MRE48] How to convert to Kia TPS

I have printed the adapter plate with ABS and bought a Kia TPS with the Miata plug. There are documentation on the wiki that touches on how to jump the MREAdapter48 for a Kia TPS, but the information is outdated (Schematic is at 0.4 now). From what I see from the schematics I think 1N: IDL for stock...
by fan
Tue Dec 29, 2020 7:40 pm
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

I think this is what I experience. IAC below 30% increases the idle, up to ~1800rpm at 0%.
by fan
Sun Dec 27, 2020 12:24 am
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

I tried the manual slider today and discovered that it can't go under 1000 however I change the setting. @AndreyB is right, I could have a vacuum leak somewhere. Will do more experiments tomorrow.
by fan
Sat Dec 26, 2020 8:58 pm
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

Oh never realized that :P

Will try!
by fan
Sat Dec 26, 2020 6:30 pm
Forum: You and your build
Topic: 97 Miata MRE (turboz)
Replies: 16
Views: 5586

Re: 97 Miata MRE (turboz)

I think the raw signal output is a sine wave, but I don't have a 97' so NVM :)
by fan
Sat Dec 26, 2020 6:28 pm
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

Hi Andrey, My suggestion is that we should have a manual IAC override (like a slider or text box) that can temporarily change the "raw" IAC percentage (in PWM %) in the "Bench Test". This would immediately determine if it's a controller issue or an IAC issue. I can try unhooking ...
by fan
Sat Dec 26, 2020 5:28 pm
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

I think there needs to be a function to test the IAC valve by setting it to a predetermined number? If you look at the logs you will see that the minimal IAC output is above 30%, while the rpm is ~100 rpm faster than the target rpm.

I will try multiplying the VE table and autotune again today.
by fan
Sat Dec 26, 2020 2:26 am
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

Hi Gepro, Thanks for the suggestions! BTW, how can I remove the 20kPa row from the VE table? I did another autotune run today for 30 minutes. Stalled maybe 5 times, but I don't know if it's really deceleration-caused. I think it's probably linked with power steering, as stall happens almost all at t...
by fan
Fri Dec 25, 2020 10:09 pm
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Re: Deceleration Settings (91' NA Miata B6ZE)

I think yes?
2020-12-25 17.09.26.png
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by fan
Fri Dec 25, 2020 7:57 pm
Forum: Tuning Support: Making it Run
Topic: Deceleration Settings (91' NA Miata B6ZE)
Replies: 20
Views: 10654

Deceleration Settings (91' NA Miata B6ZE)

Hi all, Per @AndreyB 's request I'll put the problem here as a new thread. What I have: - 1.6L B6ZE Miata 1991 - MAP signal tee'd from the fuel pressure regulator - Wideband (LC-2) - Stock on-off TPS (I have a vTPS on hand, thinking about installing this week) What I experience: - RPM dips too much ...
by fan
Fri Dec 25, 2020 4:13 pm
Forum: You and your build
Topic: 1993 Mazda Miata
Replies: 73
Views: 18626

Re: 1993 Mazda Miata

Hi @starsky, I actually suspected the same, if you have your stock narrowband and the rusefi board you can actually check if that is true by setting a custom wideband profile in Sensors->EGO, type Custom, low voltage 0, low AFR 0, high voltage 5, high value 5, and the gauge should output something b...
by fan
Fri Dec 25, 2020 4:01 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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, mayb...
by fan
Thu Dec 24, 2020 5:36 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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.
by fan
Thu Dec 24, 2020 5:33 pm
Forum: User Support
Topic: rusEfi map: who is where? map in the first message
Replies: 98
Views: 74370

Re: rusEfi map: who is where? map in the first message

Atlanta, GA 30318

Red '91 Miata :)
by fan
Thu Nov 05, 2020 11:32 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

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!
by fan
Thu Sep 24, 2020 2:26 pm
Forum: You and your build
Topic: 1991 NA6 Miata (Stock)
Replies: 41
Views: 13301

Re: 1991 NA6 Miata (Stock)

@mck1117 Yes, we used the DIAGNOSIS jumper box and the fuel pump was running (confirmed noise).

@AndreyB I agree, probably it's a subtle difference in ECU wiring. I am very busy for my studies, but I am more than happy to test anything (I have a DMM and an oscilloscope).

@stefanst Many thanks!