rusefi.com

I strongly suggest making the IGBTs replaceable in some way, either solder through with heat sinks or spaced out in a way that allows a human to replace them as the IGBTs are the number 1 point of failure on the ignition system if things are not well set up. Primary points of failure on the megasqui...

With the Bosch ECUs there is sometimes "misfire detection" which is only a basic check that a pulse is created on the secondary side of the ignition coil. BMW used this on most of the COP cars from ~92 onwards, it is useful for detecting a coil failure or a problem with firing the plug but...

Interesting, was this a DIY built unit or a JLC built one?
We have found the majority of issues like that have been with DIY built units which is why we have stopped offering kits.
If it was a JLC built board then we may have to ultrasonic the boards in future.

This should not be an issue, the software treats the 2 signals and independent 0-100% signals and then compares what the % of each signal is. As long as the % is the same then the TPS signals are considered to be in agreement and there is no TPS error. By doing this we can have any relationship betw...

Plug pic for anyone needing a good view of it.

Time for a plug hunt boys. Basic dimension sketch below.

Pins are about 4mm down from the top inner surface

RusEFI now has some mazda ion coils for test.
Got me 4pc here and will be sacrificing one to see what we can learn about the internals.

Boots do come off if you pull hard enough and the inside of the boot is just a tube with a spring inside, zero ohms, dumb coil spring.

Any news?

How is the build going?

Just giving this one a bump incase you still need assistance.

Maybe it is worth posting your tune and a log of cranking to rusEFI.com/online and posting a link?

Hopefully someone will be able to take a look through and advise some things that may help you get unstuck.

We have outlined the reason for this decision in the wiki page here.

We hope everyone will understand and appreciate there are good reasons for this with the recent hardware.

https://github.com/rusefi/rusefi_documentation/blob/Build-the-firmware/FAQ/FAQ-Why-No-Self-Assembly.md

Unfortunately the TLE8888 is an integral part of the design and there is nothing available that it can be substituted for.

Can you ID which tune was used for those logs? There is now 6 tunes in there and it's hard to ID which one is correct. Going by the ID on the log your idle is still messed up as you have not corrected the things highlighted already in this thread. Please fix the things we have already pointed out an...

Have you looked at similar engines on rusEFI.com/online?

While not all of the maps are perfect or ideal for your engine they will give an idea of what you might need to do for yours.

AndreyB wrote: ↑

Thu Apr 22, 2021 4:09 pm

Sanya3m wrote: ↑

Thu Apr 22, 2021 4:06 pm

Hello, Can you please tell me if I can use STM32F429ZIT6 instead of ..GT?
The differences are only in the amount of memory, 2 MB instead of 1 MB ...

More memory would be totally fine.

Do we know that one is pin compatible and has not other changes?

I am not sure but one of the others will confirm. What I can say is that it is not a good idea, simply because we can only really offer support for the chips listed on the wiki page (https://github.com/rusefi/rusefi/wiki/stm32-readme). With a different processor you are kind of in uncharted territor...

Just to note here, the ignition timing tables are advance tables. They dictate the amount of degrees the ECU will advance the spark timing before TDC. If you put positive values you get advance and timing will be BTDC, Negative values are ignition retard and cause the spark to be after TDC. This is ...

It also looks like you are trying to combine an incorrect idle advance table with the closed loop ignition timing. Thus the firmware is struggling to cope. Problems I can see instantly: Advance needs to be positive, try the values in the table below. image.png Your idle deadzone is set to 950rpm. Th...

Your problem is you are commanding negative timing values by putting negative values in the idle advance table.

Very little. There are some small changes between 0.4 and 0.5 but nothing significant. The 0.6 is more a reaction to the chip shortage, functions are exactly the same but a couple of chips changed due to unavailability. Changes I am aware of on 0.5: Added Barro sensor Changed capacitors to through h...

I will admit I can only see the need in terms of people making their own algorithms or strategies. Which leads me to think that the number of people that need it is very small and the number of those willing to put the work in to achieve it is even smaller. The FSIO is a case where MATLAB or SciLab ...

Yep, those DB37 connectors do not like being in an auto environment for too long,

Are you thinking a little more room around the board to get the wire in?
There is a USB header that is designed for a wire in USB, it's through holes so could be wired from either side.

Wait, your trying to use 60-2 trigger setting with a wheel that does not give a pattern for 60-2? I think this may be the route of your random sparking behaviour. I have a feeling this may need a special trigger setting of that high tooth filing into a double -2 gap. Otherwise your trigger is really...

puff wrote: ↑

Thu Apr 01, 2021 6:58 pm

But anyway there are no guarrantees that by the time you send your board to fabrication, these parts are still in stock.

Totally this, things seem to be in and out of stock on a daily basis. Predicting what is going to be available is becoming a gamble.

That's true for the M70 but not the M73.

M70 uses a pair of modified M1.3 motronic units but the M73 uses the much later more complex M5.2 ECU.

The knock sensors will totally have been throwing a fault code if they have cracked. Kind of common on the BMWs of that age as the age/heat cycles get to them after a while. You might want to go for something bigger than the Jag supercharger, iirc they run out of puff around 450hp which will be very...

It is actually easier to spoof the inputs to that generation ECU than it would seem, I have done it on the M3.3 which is the generation before your ECUs. Can you grab the BMW part number from the 2 ECUs you have to confirm what generation they are and I will try to get some details up of how I have ...

You are USA based right?

I think you might get away with taking the CAN messages and transmission info from a 750, 740 or 840. I believe they are very similar and would be surprised to learn of any significant differences in the comms or body modules. Certainly the ready programmed transmission unit is the same part number ...

People have had good results with a few kinds of COPs. Known working setups are: Chevy LS smart coils VW smart coils M50/M52 BMW using audi ignition pack Miata smart coils That is just off the top of my head. The short version is nearly any coils can be made to work but if your in the USA and want l...