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The story so far.... (The purpose of this is to pull together everything that happened in 7 pages into one single post) 1994 Japanese Eunos 1.8 imported into the UK. Stock ECU Pictures http://i754.photobucket.com/albums/xx182/the_deviator/MX5/IMG_20140827_180953_zpsvvik5cmd.jpg http://i754.photobuck...

Bad news I'm afraid. ECU connected, ignition on. Ran fuel pump test 3 times, no noise, nothing on meter. Then there was an ascending high pitch whine/whistle followed by a blank display on the Frankenso. This time only micro usb connected so laptop stayed up. Pulled plugs, disconnected battery. Rein...

Is it worth me metering out 2T to GND to see what it does while issuing the pump test? Or do you have a better idea?

Progress! The pump and relay fired straight into life. Looks like one issue is about to be solved.

OK what do I need to short? I want to be 100% certain on this (for obvious reasons)

Updated. Now on Console 20141114; firmware=20141115@5394 MX594d@COM4

Is there a way to operate the fuel pump test with less run time? The reason I ask is I'm thinking of sticking a bottle in the engine bay and running the test. Obviously 3secs may well fill a bottle unless I pipe it out to a large Gerry can. I was hoping there was a de-pressurise valve on the injecto...

Humming noise while the car runs, drives me bonkers. Maybe the PWM frequency on the ICV is not high enough and the solenoid jiggles? Funny thing, it doesn't hum nearly as loud when the engine is not running but in the ON position. Is it the same one I had? http://rusefi.com/forum/viewtopic.php?f=3&...

I've not got as far as bridging any wires yet! I will but I'm still double checking the basics before I commit another discovery suicide. The wiring for my car with BPF3 ECU is similar to that shown http://rusefi.com/wiki/index.php?title=Vehicle:Mazda_Miata_1994 however there are 3 differences, high...

Firstly, Idle solenoid fix worked fine. No more buzzing. Test results... 1. Fuel Pump - Still nothing. Even with the wife in the boot, yes she was alive before anyone starts thinking I'm a hitman :D 2. Injector Test - All good, I can hear them clicking and also feel the relevant injector clicking. I...

TO DO LIST:-
1. Fan relay
2. Idle solenoid valve, order the diode
3. Power steering

Right I'll give it another go tonight. BBIAB

It's been a busy old day! Fuel pump test - nothing, no sound. Injector test - I think I can hear the clicking, so happy with that one. Spark test - Not yet done Fan test - Nothing, no fan. The reason I didn't spark test was a noise heard whilst listening for the injectors. https://www.youtube.com/wa...

Ah, nearly forgot about the 3rd pin, glad I updated now before getting carried away. To make the testing easier I am going to try and rig up another WAP at the back of my house so I can get internet access out there. This will give me more room to work and more importantly, should be quieter than la...

Next update..... Another blurry photo, pins bent and broken using snipe nose (needle nose) pliers. I tested both cutting and snapping on the toasted board and found bending the pin back and forth tidy and closer. http://i754.photobucket.com/albums/xx182/the_deviator/RusEFI/IMG_20141113_151914_zpsbaf...

Thanks for the suggestion, I will ground myself before working with the board. Although I was no where near the board at the time of failure, it had been connected to the car for at least 3 minutes (probably more like 5-10) with the ignition on whilst I was talking to Audrey. The last actions I perf...

D1 is measuring 248 ohms in one direction and no connection in the other.
D3 is measuring 10 ohms is both directions.

Still waiting on the Discovery delivery.

Boards ordered. The Frankenso board has a short between the 5v and the VDD line (taking both points from the header). The Discovery board has a short between 5v, VDD, 3v and GND. (Which is hardly surprising given the voltage reg is black.) Obviously it's not worth connect the new Discovery boards up...

Before I order replacements, can I just check these are 100% the right boards. As there is a large black square in the upper right of this picture (oddly where my black mark is!***) which mine doesn't have. http://uk.rs-online.com/web/p/processor-microcontroller-development-kits/7458434/ *** EDIT, n...

Today's update, not good afraid. Although it could have been worse, a lot worse! http://i754.photobucket.com/albums/xx182/the_deviator/RusEFI/IMG_20141109_133335BURN_zpseacc9720.jpg http://i754.photobucket.com/albums/xx182/the_deviator/RusEFI/IMG_20141109_133323_zpsfe4480d8.jpg The situation so far....

And the firmware appears to be updated....

New title bar "firmware=20141101@5040 Miata 1994d@COM3"

The display now reads "unrealistic CLT -285". I presume this is coolant temp?

Board removed from casing, I don't have the jumper lead with me as I'm not at home. However I've setup the tools on this laptop as well and it appears the Dev Console connects and reports a firmware. The title bar states..... "Console 20141102;firmware=20140907@4951 Miata 1994@COM5" So it ...

Yes, that is with the ignition on. Without the ignition on, the ECU isn't powered. If I get chance I'll connect it up tonight.

Right time for an update...... ECU swapped. Powers up and looks well. Feeling brave I turn the key :cry: Enough drama, it's cranking but not firing. On the plus side, I suspect I know the issue. I've not heard the fuel pump priming and I have this 'thing' in my mind about the US and JDM fuel pump wi...

Right after a slack period, I am back and have time to play. Wideband is in the car and working. ECU is now jumper to P604 (12v).

I'm going to start downloading the software now.

russian wrote:

LOVE IT! I can't wait.

Nice one. My wideband is here, so not long now.

Welcome along, and feel free to ask questions. We have started a wiki that hopefully at least provides a rough draft of how to start. See this link. http://rusefi.com/ Hi kb1gtt, I've already found, read and added information to the Wiki. I'm now looking for further external information as I'd like...

Just wanted to say hi. I'm Dave and I'm completely new to playing with ECUs, it's something I've wanted to do for a while - well rusEFI has given me that chance. I should have everything I need ordered, I'm just excitedly waiting for deliveries and the time to play. I'll apologise in advance for the...

As requested.... http://i754.photobucket.com/albums/xx182/the_deviator/MX5/IMG_20140827_180953_zpsvvik5cmd.jpg http://i754.photobucket.com/albums/xx182/the_deviator/MX5/IMG_20140827_181039_zpsflklcnb1.jpg http://i754.photobucket.com/albums/xx182/the_deviator/MX5/IMG_20140827_181110_zpszdjsed4y.jpg H...