[help needed] UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
I have installed the D585 coils tonight and test drove the car on the attached tune. I get some trigger errors again no idea why Fixed!
Last edited by RadMx5 on Tue Aug 21, 2018 11:12 pm, edited 1 time in total.
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
To me this looks like it's clearly a problem at the higher RPM's. I suspect you'll find the 1k will help prevent this. It might be good to switch to the 9927. the op-amp is just doing analog. If your hall doesn't make it to 0V, your input will be above 0V. The rounding near the edge corners will be seen by the GPIO and could cause excessive jitter. The 9927 will force 0V when ever the input crosses 2.5V. That makes for a cleaner signal to the STM pin. The STM32 is guaranteed to be a 0 when you are below something like 0.5V or 0.9V. Above that is not guaranteed. The 9927 ensure that below 2.5V is guaranteed to register as a 0V. By guaranteeing that it registers at a much higher voltage, it minimizes jitter issues caused by the rounded corners of the signal.
You could try looking at how square you signal is at the STM32's pin. I'm fairly sure you'll see there is a fair bit of rounding at the corners of your edges. This rounding will become more of an issue at higher RPM's.
You could try looking at how square you signal is at the STM32's pin. I'm fairly sure you'll see there is a fair bit of rounding at the corners of your edges. This rounding will become more of an issue at higher RPM's.
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Trigger problem solved!!
Thanks kb1gtt for your advise. To be honest I tried soldering the MAX chip, but I found it soo difficult while all the wire jumpers around are very close to it...
I'm still using op-amps didn't give up haha
Invert primary signal feature was enabled and messed everything up. rusEFI counted gaps instead of teeth on the 36-1 trigger wheel...
Hopefully now it will be fine, no trigger errors even at or above 7000RPM! Im happy with it now!
Cranking I can't understand why my Idle valve is not turning on while cranking. I will log some data tommorow and debug IDLE? will this show me some usefull info?
If not how else can I check what's going on with the valve while cranking?
Cranking RPM limit is set to 260 I don't know if it affects it? should it be higher?
Valve frequency: 200Hz seems ok once engine is running.
Once the engine starts valve works fine.
I got some logs from tonight but my debug fields are poinitng at Altenator.
Thanks kb1gtt for your advise. To be honest I tried soldering the MAX chip, but I found it soo difficult while all the wire jumpers around are very close to it...
I'm still using op-amps didn't give up haha
Invert primary signal feature was enabled and messed everything up. rusEFI counted gaps instead of teeth on the 36-1 trigger wheel...
Hopefully now it will be fine, no trigger errors even at or above 7000RPM! Im happy with it now!
Cranking I can't understand why my Idle valve is not turning on while cranking. I will log some data tommorow and debug IDLE? will this show me some usefull info?
If not how else can I check what's going on with the valve while cranking?
Cranking RPM limit is set to 260 I don't know if it affects it? should it be higher?
Valve frequency: 200Hz seems ok once engine is running.
Once the engine starts valve works fine.
I got some logs from tonight but my debug fields are poinitng at Altenator.
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
hey! couple of weeks ago I tried starting my 36/1 engine with just VR CPS sensor installed and lm1815-based board serving as a conditioner circuit - I had no time to attach my laptop and looked through the log files just several days later. There was no RPM present in the log file. I just saw it changed to -1 during cranking. First I thought it was a hardware problem (though my diy tacho that used signal from lm1815 board and the same CPS sensor worked just fine last winter). So my guess was the signal was inverted and all I need to get RPM is to rewire my CPS sensor.
I didn't know there was a setting to reverse its polarity.
But now you say that even with reversed polarity it somehow worked with 36/1 trigger wheel? I'm a bit confused
I didn't know there was a setting to reverse its polarity.
But now you say that even with reversed polarity it somehow worked with 36/1 trigger wheel? I'm a bit confused
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
That idle valve behavior during cranking is weird and wrong. Mine doesn't do that. See attached picture. I do seem remember, however, that I had a similar problem a few firmware revisions back. Are you running the latest and greatest?
I noticed that you are using a pretty high value-75. Maybe you're exceeding some limit? Have you tried a lower value- maybe 40?
Here's a log of proper cranking IAC behavior.
I noticed that you are using a pretty high value-75. Maybe you're exceeding some limit? Have you tried a lower value- maybe 40?
Here's a log of proper cranking IAC behavior.
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Since my last post I almost daily drive on rusEFI. There are no issues with the electronics, firmware and software, it seems very stable!
The car is turbo charged and runs on over 10 psi boost and... the clutch slips on 3rd gear on full boost
Fuel map and ignition timing need fine tuning on a dyno, one day
I only had a problem with the cheap ebay china 3Bar Map...I have replaced it and now the engine runs good again.
I just wanted to thank you guys for your support here! And I hope this project continues to grow!
The car is turbo charged and runs on over 10 psi boost and... the clutch slips on 3rd gear on full boost
Fuel map and ignition timing need fine tuning on a dyno, one day
I only had a problem with the cheap ebay china 3Bar Map...I have replaced it and now the engine runs good again.
I just wanted to thank you guys for your support here! And I hope this project continues to grow!
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Cool the clutch slips means engine runs good.
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- running engine in first post
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Hey, somebody else who daily drives rusEfi and it made the clutch slip in 3rd! I turned the boost up from 8 to 15 on my Volvo, and it made the clutch slip! Fixed with a more expensive clutch
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Cool and good to hear. Thanks for the pat on the back and keep up the good work.
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Hello friends!
Haven't been here for a while Do I need to catch up a lot?
What is the current status of the rusEFI? I've seen some progress with ETB, is it usable? (it would be nice to add an ETB to the MX5)
What about the hardware did you change something?
Should the latest bundle work on my board?
Sorry for asking many questions, but it is hard to keep track what's going on here if you have a little break hah. I thought I will simply ask here instead of digging 100 topics hah
I still have the car, and the plan is to get the rear suspension cleaned and powder coated
I'll upload some photos later
Haven't been here for a while Do I need to catch up a lot?
What is the current status of the rusEFI? I've seen some progress with ETB, is it usable? (it would be nice to add an ETB to the MX5)
What about the hardware did you change something?
Should the latest bundle work on my board?
Sorry for asking many questions, but it is hard to keep track what's going on here if you have a little break hah. I thought I will simply ask here instead of digging 100 topics hah
I still have the car, and the plan is to get the rear suspension cleaned and powder coated
I'll upload some photos later
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
> What is the current status of the rusEFI?
https://github.com/rusefi/rusefi/blob/master/misc/Strategy_2019.md
only 500 meters on ETB, very little testing. No ETB idle, a lot to develop still.
> Should the latest bundle work on my board?
you would probably need to create new projects but we are always (so far) compatible with all hardware from the past.
https://github.com/rusefi/rusefi/blob/master/misc/Strategy_2019.md
only 500 meters on ETB, very little testing. No ETB idle, a lot to develop still.
> Should the latest bundle work on my board?
you would probably need to create new projects but we are always (so far) compatible with all hardware from the past.
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
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
I believe yes latest firmware should work with any older pcb's.
It gets harder to keep track of stuff as much of the development conversations are happening in slack. TS has / is undergoing some rearranging. I understand that is a welcomed cleanup.
It gets harder to keep track of stuff as much of the development conversations are happening in slack. TS has / is undergoing some rearranging. I understand that is a welcomed cleanup.
Welcome to the friendlier side of internet crazy
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
Finally welded the diff
Many people help, support and motivate me to get this car back on road/track
It's getting there! Sorry for the mess in the garage haha
No time for cleaning...
Some photos:
Many people help, support and motivate me to get this car back on road/track
It's getting there! Sorry for the mess in the garage haha
No time for cleaning...
Some photos:
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
This diff is not orange It's not rusEfi-compatible if it's painted blue
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
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
helloo!
Quick update
Here are some photos:
I need to get new lambda sensor and go to a dyno to tune the fuel/ignition timing tables properly, in mean time repair some little oil leaks and do the body work
Then it should be ready for a track day!
Need new rear discs also...
Quick update
Here are some photos:
I need to get new lambda sensor and go to a dyno to tune the fuel/ignition timing tables properly, in mean time repair some little oil leaks and do the body work
Then it should be ready for a track day!
Need new rear discs also...
Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
So, rusEFI turned you Miata into a squealer
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Re: UK Mazda MX5 miata NB 1.8'99 - Future Turbo project r0.5 #38
hah yeah pretty much...
The car wasn't touched for about 5-4 months while waiting for the rear sub-frame and suspension to be done and it took only a few turns of the crankshaft to start the engine without touching the throttle too, I didn't expect that tbh
The car wasn't touched for about 5-4 months while waiting for the rear sub-frame and suspension to be done and it took only a few turns of the crankshaft to start the engine without touching the throttle too, I didn't expect that tbh