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Hello everyone, my name is Kyle. I have a 1985 mazda rx7 that is a dedicated race car. It doesn't have a rotary anymore but instead a Mazda 2.2l out of a Mazda 626. I pulled the harness and ecm out of the donor car, and like everyone else I want more power. So after countless hours of looking at standalone ecm's I found rusefi, and am willing to give it a shot if it has the possibility of working. Some info on me. I'm a diesel mechanic with a very limited small electronics background I've tinkered with my Arduino and have made some hobby electronics. But nothing like building a ecm. And so every one knows I have access to almost every car/truck/ect wiring diagram if needed.

failureatlife wrote: if it has the possibility of working.

for a 626 engine it's more than a possibility, I am pretty sure it would work!

Welcome to the forum.

Does the car currently run under stock ECU?

Welcome to the forum.

Have you found the wiki yet? If not here's a link that might be of interest. http://rusefi.com/wiki/index.php?title=Manual:Hardware_Frankenso_board

An assembled Frankenso with pigtail is probably what you are looking for. This minimizes the soldering that you would need to do. It would probably makes this a harness effort instead of soldering effort. Do you know your crank wheel pattern? Hall or VR?

The car currently runs yes. it uses vr with a "4 rotor bug "in the dizzy. it has a 4 pole star like shape. I forgot the name of it lol.

failureatlife wrote:it uses vr with a "4 rotor bug "in the dizzy. it has a 4 pole star like shape. I forgot the name of it lol.

I think I know exactly what you are talking about, and that's a Hall sensor. We have that Russian older 626 same thing, and Festiva yellow race car was using this before the convesion to Miata CAS. And Mitsubishi from Indonesia is pretty much the same exact sensor same shape.

Some versions are two channels - two wires, some versions are just one channel one signal wire.

yes that's it mine is a two wire