Search found 23 matches

by mapaul
Thu Oct 15, 2020 5:18 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

All the parts have now arrived. I'm just trying to figure out how to install everything. This is my first time trying to run something through a firewall, and this car has AC and everything else stock, so there aren't a lot of holes to choose from. Hopefully I will get it installed this weekend.
by mapaul
Tue Oct 06, 2020 11:58 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

My goal is to continue to be able to switch back to the stock ECU if I go on a trip or if rusefi is acting up for some type of driving. So I don't want to make changes that prevent the stock ECU from working well I also have no desire to add an ugly led lit gauge to my otherwise stock interior. I am...
by mapaul
Tue Oct 06, 2020 7:38 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

Thanks for the explanation. - Tach. yes I am not seeing revs on the tachometer in the dashboard, but I do see them in Tuner studio. I'll look into this, but I believe the NA6 dash may be different to the NA8. I will check R55, and if it's not that, do some research and report back. - O2 sensor. Yes ...
by mapaul
Tue Oct 06, 2020 4:12 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

dang, didn't see your reply earlier... Is there some way to get notified when people respond?

EDIT: found the subscribe to thread function.
by mapaul
Tue Oct 06, 2020 4:10 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

I realized that was a pretty silly question, since I can warm up the engine myself. I warmed up the engine using the stock ECU, and tried again after richening up the VE table between 150 and 120 for safety. I set the timing at 10deg just to be safe, and got this log: https://rusefi.com/online/view....
by mapaul
Tue Oct 06, 2020 3:00 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

I noticed that the MAF transfer function on AndreyB's NB2 tune https://rusefi.com/online/view.php?msq=28 would put my idle in the right ballpark, so I used that. I also realized that my car always dies aproximately two seconds after startup, when the fuel unexpectedly drops, and I figured out that t...
by mapaul
Mon Oct 05, 2020 5:40 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

Point taken. I will purchase a wideband and install the vacuum hose.
by mapaul
Sun Oct 04, 2020 10:56 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

Oh I should also say the curve I'm using is essentially min(voltage - 1.2, 0) ^ 3 * 2.5, which matches the value I found on the forum. I have been changing the start parameter (1.2v) to match the bottom of my sensor (~0.7v). with this set to 1v it tops out at 160kg/h so that's very close to what you...
by mapaul
Sun Oct 04, 2020 10:51 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

The pulldown didn't hurt anything, but it also doesn't seem to have helped. So I have now removed it. I reset my VE table to 100% across the board, and also turned dynamic timing back on (I had this fixed at 10deg before) and I was able to achieve the following log https://rusefi.com/online/view.php...
by mapaul
Sun Oct 04, 2020 8:16 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

hmm, for some reason it didn't associate the tune with the log, here it is https://rusefi.com/online/view.php?msq=226.

I have now connected the pulldown, and I suspect it won't change anything, but I'll report back.
by mapaul
Sun Oct 04, 2020 7:56 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

I removed R30, and was able to see values in the expected range ~0.7v without the engine running. This might be a little low, based on the calibration curve, but MUCH better than before. I turned off ignition and fuel, and cranked the engine over to see what the MAF was reading with a little air, an...
by mapaul
Sun Oct 04, 2020 3:59 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

Thanks for the explanation! That makes a lot of sense now. I have purchased some vacuum line, but it may not be long enough. I do have a base calibration that I found on a forum, so I will start with that.
by mapaul
Sun Oct 04, 2020 6:00 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

Can you explain what you mean by that, Andrey? My (admittedly very limited) current understanding of the architecture of rusEFI is that the TLE8888 handles most of the IO and voltage shifting, while the stm32 is responsible for determining what to output, and how to respond to inputs. Given that arc...
by mapaul
Sat Oct 03, 2020 5:50 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

I measured the voltages on the connector with the key in the accessory position, but engine off, since I couldn't figure out how to measure the voltage without disconnecting the connector. With the Stock ECU: 12v 0v 5v 0v 0v With rusEFI 12v 3v 5v 0v 0v The wire colors are in the same order as the MA...
by mapaul
Fri Oct 02, 2020 6:56 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

I have updated the pin to "AN Volt 9" which is what I had set it to originally, and I'm still seeing 0v. I buzzed it out from the connector to the AFM all the way to the ecu pin, and it all seems correct (connects to pin 2O as expected). On the asumption that this is correct, I have put in...
by mapaul
Wed Sep 30, 2020 4:43 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

Hi stefanst, i'll try changing the pin. AFAIK that is the same pin as the MAP sensor though, so do I have to disconnect that somehow to keep it from interfering?
by mapaul
Wed Sep 30, 2020 12:35 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

The new MAF curve didn't fix it. Maybe I have the wrong pin. I will check that tonight. I took a log which shows that the MAF never registered any airflow, and that the injectors came on during startup, but promptly turned off immediately after the engine rpm rose.
by mapaul
Tue Sep 29, 2020 11:56 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

I removed the jumpers and now I can connect the the ECU via usb both with the ignition on and off! Thanks! I was able to calibrate my TPS, and even got the engine to briefly start up, however it would die right away. Taking a look at the MAF transfer table, it seems that may be the issue, since the ...
by mapaul
Tue Sep 29, 2020 5:52 pm
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

Re: 1995 NA8 Miata - MicroRusEFI PnP

No worries. I'll remove the jumpers and report back here.
by mapaul
Tue Sep 29, 2020 8:41 am
Forum: You and your build
Topic: 1995 NA8 Miata - MicroRusEFI PnP
Replies: 45
Views: 28163

1995 NA8 Miata - MicroRusEFI PnP

Just recieved my NA 48 pin PnP board with microRusEFI today. I connected it to the laptop and was able to get it connected to tuner studio. However when I got it connected to the car, it wouldn't show up as a USB Serial device either without the ignition turned on, or when plugging into it with the ...
by mapaul
Sat Sep 12, 2020 6:21 pm
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30886

Re: MREAdapter48 pnp Miata MX5 NA

Oh no worries! I just misunderstood. I'm very happy to support the work that goes in if people have boards to sell. My miata is an NA8, but 1995 so OBD1. Does this adapter work for that? (I'm guessing it would be the NA6 adapter you mentioned?)
by mapaul
Sat Sep 12, 2020 5:20 am
Forum: Dev: Hardware
Topic: MREAdapter48 pnp Miata MX5 NA
Replies: 39
Views: 30886

Re: MREAdapter48 pnp Miata MX5 NA

Hello, I just joined the forum, and have decided I am interested in trying to buy or build one of these for my completely stock 1995 NA Miata. Is there still a group buy? otherwise I'm happy to assemble it myself. I assume this is a JLCPCB type assembly deal, if so, I can just order that myself. Jus...
by mapaul
Sat Sep 12, 2020 5:14 am
Forum: User Support
Topic: rusEfi map: who is where? map in the first message
Replies: 101
Views: 151238

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

Hello My name is Paul and I'm in Seattle.