MSefi.com read only forum (Jan.15,2018)

I have stim version 2.21. Is the switch your talking about the one right beside the RPM pot? If so, I've tried it in both positions with the same results.

trakkies wrote:Is this with TS showing zero revs from the stim?

Yup. And EGO shows either 14.70 volts or 12.00 volts depending on the switch and pot settings.

I reflashed it again, and again. Every time it's the same results.

The first time I power it up after the flash, the IG LED on the stim stays on, and the D14 LED on the Main board stays on. Every subsequent boot after that, the D14 LED doesn't light up, but the IG still does.

Okay. I've updated to the latest MSII code - v2.920. It was a little painful. I generally run linux, but there's no Loader app for linux that I'm aware of, so reboot to windows and discover that my Prolific 2303 based USB->Serial adapter isn't support in Windows 8. Grrr. In the end, I had to bring ...

Matt Cramer wrote:Sorry, missed that in the first post.

No problem. I went and checked it again last night just to be sure. It all checks out correctly.

Matt Cramer wrote:You might want to try reloading the firmware and starting from the default map in case you have a corrupted tune file somehow.

Will do.

No settings jumped out at me. Let's test the opto input circuit. With the Megasquirt powered up, apply 12 volts to pin 24 or TachSelect, and check the voltage on the TSEL jumper with a voltmeter. You should read zero volts. Next, ground pin 24 so it has no volts on the input circuit, and check TSEL ...

I should have mentioned in my previous post, D2 is still jumpered. I just haven't add the Zener diode yet, because it won't work with the stim.

OK. Still working on this. I've made the modifications to trigger from the negative terminal of the coil. I'll set this up for fuel only right now. I added D1, C12, and C30. I haven't added D2 yet because it won't work with the stim. I will add D2 once I get ready to install it in the truck. However ...

In TunerStudioMS, set:

Trigger offset = 0° (this will vary slightly, depending on the wheel/pickup configuration),
Ignition Input Capture to 'Rising Edge'
Cranking Trigger to 'Calculated',
Coil Charging Scheme to 'EDIS',
Spark Output to 'Going High (Inverted)'
Trigger Wheel Teeth to '0 ...

Is this the right file?

I have another question. I'd like to do a bit of a phased install; fuel first, followed by ignition. Is it possible to install the the EDIS VR sensor and control box, and use that for the tach signal while still using the distributor to handle ignition. Then once I've got ...

Alrighty, I'm building an MSII on a V3.00 Mainboard that is going to be setup for EDIS ignition. I'm using a Megastim V2.21 running on a computer power supply, which is delivering about 11.8V. If a 9V battery is good enough, this should be more than enough. I'm using MSII firmware 2.905 and running ...

I've got a '48 Ford 8N, and I've toyed with the idea of MS'ing it as well. Keep us posted, I'm interested to see how this turns out!

Cool.

On my engine the eccentric is a separate piece which is held on by the cam gear bolt. Pulling it off, and installing a toothed wheel should be trivial The only difficult part might getting the alignment with the hall sensor through the block off plate to work out.

This isn't essential for ...

Can a hall sensor (like this one) be used in an oiled environment?

On my old V8, I've made the switch to an electric fuel pump. If I used the old fuel pump block off plate as a mount point for the hall sensor, and replaced the eccentric with a toothed wheel of some sort then I would have a nice cam ...