Anyone who thinks this will be easy should think again. <img src="/forums/images/graemlins/baby.gif" alt="" />

Here's the relay board, now enclosed in a case that can be mounted in the engine bay with a measure of weather protection. It did take a little sanding of the board edges to fit, but it looks like it'll work ok:


The ECU main board is nearing completion, but I'd like to meet the fellow that (according to published advertisement for MS) can assemble one of these in 6-12 hours and get it to work. <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/scared.gif" alt="" /> Soldering is one thing, but understanding what a computer geek is trying to explain to a mechanic is something else... somehow the language and culture are quite a clash - but ultimately have to be merged in order to know what the heck needs to be done. Here's the half-finished board running on the stimulator:

And after much hair-pulling and finding out that the downloaded firmware was not the complete version I needed, I finally got the correct files and burned code to the processor - here's a shot of the real-time display running on the laptop:


Charlie - since you've had experience with Mitsu and MS, hopefully you can steer me in the right direction on a question that's bugging me:

I'm trying to figure out if I should use direct coil control - or use the power transistor with the OE coil. I started populating the board with the high current ignition driver circuit, but it seems to me the other way 'round makes more sense. I know there are issues with figuring out the rising/falling edge, high/low trigger, but which way is actually better? I don't mind the figuring and head-scratching if the low voltage signal is best. It seems to me to make more sense to use the low voltage signal to the power transistor along with the LC filtered signal to the tach that's on the OE setup. What's your opinion, and is one method better than another for full spark control on forced induction?

Oh, wouldn't there be more protection from burning up the coil if I didn't use the high current ignition driver circuit for direct coil control?

Frank