rusefi.com

One thing that has just come up is possible a dodgy coolant sensor making for a hard first start - Solution was to temporarily flat map the CLT fuel corrections just to be sure that it was not causing issues with the first start up and fix the CLT after we knew it was all working otherwise. Also som...

This is your missing piece of the puzzle.

https://www.ecstuning.com/b-genuine-bmw-parts/air-pump/11727508427/

http://bmwfans.info/parts-catalog/E38/Europe/750i-M73N/1998/browse/engine/emission_control_air_pump/#7508427_1

Might be able to clear up some confusion here, the injectors are "air guided" so they use a cushion of air around the injection spray to help prevent port wall wetting (and thus emissions during transients), I believe they are not using any kind of pressurised air unless they were previous...

In the current case I do not see how we would have space for it. There is not 1 square cm of the current MRE that does not have functional circuits on it.

Huh, weird.

Well I will give it an update and confirm if the board wakes up with just frankenso power.

Sounds like this is an FAQ thing.

Is there something special about the TPS?

M52 TPS is reverse signal (lower ADC open than when closed) and RE has been working fine with that for a long time.

Ohhh, ST170/focus SVT, previously people were disabling the VVT to use OMEX etc.

Good to see you managed to resolve this, I have moved this to Hardware as it was a hardware issue.

@Andrey - Is it worth me checking the pigtails I have here?

Just to update on this thread, AZM now has his MRE in his hands and ready for him to begin his rusEFI adventure.

Given his skills we should see him starting a car up over the weekend right?

Welcome to the mad house.

Something that has just come up, checking the fuel pump is running is really worthwhile. Fuel pressure - record value this is last, learned that the hard way a few years ago when I set the shop on fire because I had the fuel pump on and an injector wire shorted and filling the exhaust system with f...

Just as a confirmation, I tested the AUX lowsides on AV 6, 8, 9 and 10 tonight and I can confirm that all but AV6 will work as a lowside out of the box. AV6 needs a zero ohm resistor added to make that one work but it also functions. So if the AUX AV reuse pins are selected then they 100% work. What...

Something that has just come up, checking the fuel pump is running is really worthwhile.

May have just been diagnosing a non-start log that is hopefully due to a non functional fuel pump.

Your looking to run a 6 cylinder right? At this time the only proven way to run a 6 cylinder on an MRE is wasted spark and batch injection using the standard 4 Inj and Ign outputs. The VNLD5090 is pretty untested as far as I am aware, they were added on 0.5.2 and I believe have not been used for any...

To give a more positive update to this thread we have assembled a prototype DIY ion board based on a design MCK117 produced and have tested it using an R50 mini wasted spark coil connected to an MRE. Result was no magic smoke escaping after 50+ sparks and a trace captured on a scope that was nicely ...

I would like to make a note here that the 2002 paper on diy ion sense is fundamentally wrong in many areas, at the time of writing it seems the author did not understand either the fundamentals of combustion timing or the nature of the signal being sensed. A quick Google of it also brings up the thr...

The comment about using the bench test is a good one, I had to do that recently to figure out the wasted spark wiring on a car I was struggling to start had been done wrong so 1 was 6 and 2 was 4 etc etc.

That's a good one, "is there fuel in it?" is one I see too many people, right up to professional level get wrong. I think my first tip would have to be "make use of the bench test functions" On a new board I like to check that all channels are responding and set to the correct in...

Lets kick this section off at the beginning.

Share your tips and tricks for getting a good first start here.

I will try to think of some over the next few days and drop them here.

I have moved this to the misc forum as while there may be someone here who can help and we love this kind of freeing of knowledge the topic is not really directly about the rusEFI software.

Just an FYI, the attached STL files have now been tested and confirmed to work and fit.

OK I see, so its more a case of being able to overide the afr table to do power enrichment above a certain tps point. That makes sense. For clarity, using the afr table to tune the labmda for normal running conditions and run lamdba one everywhere you don't have to use rich mixture for cooling (lik...

That's come together really nicely.

OK I see, so its more a case of being able to overide the afr table to do power enrichment above a certain tps point. That makes sense. For clarity, using the afr table to tune the labmda for normal running conditions and run lamdba one everywhere you don't have to use rich mixture for cooling (like...

OK, you got me curious, what are you planning to do that would need the afr target decoupled from the ve table and other fueling?

Case has been getting updated to rev 0.3/0.4 tonight so it has extra back space for the capacitor and the front USB as an option.
Will hopefully have some decent progress and a new STL package tomorrow.

by the look of it this is an M73 rather than the M73tu so it is using 3x 88pin connectors.

This one is the reason I was sure Andrey's was 88pin but turned out to be 134pin.

There is a change on the M62 V8 and M73 V12 sometime in the 90s from the 88 pin to the 134.

It will only take 2 or 3 people wanting one to make it worth me whipping up a batch of 5pc here in the UK. Edit - Actually if you are happy to have a rev 0.3 board without knock detection then I have a pair of boards here now and would be happy to let one go. I would just have to program and test it...

You lucky that you are using an M73 so we have a fair bit of knowledge on these between a few people on the forum. I gather your install is relatively unique but that should not matter too much. For general information then the wiki is the best place to go. https://github.com/rusefi/rusefi/wiki If y...

Based on your user name I am assuming your UK based, if there are a few more UK people interested then it might make some sense for me to look into arranging a UK batch.

Hi James.

Is this for the Countach rep?