I have the 22RE with 3 connectors. 10T 18T 14T for a total 42 pins. I did some digging, that won't fit. I have combed the internet for several hours trying to find ANYTHING on that 22RE connector.
For me, it doesn't matter. I can easily roll my own. But the project has another target goal in mind. I want a recipe others can follow that would not normally be turning to EFI as a solution. See, motorhomes get horrible gas mileage. 8mpg is about the norm. Our Toyota Motorhomes do better though, WAY better. They get 12-15mpg. But I have taken a pretty good look at the very outdated fuel system and I am certain I can improve on it some more.
I am going to start this adventure with a MegaSquirt. I have plenty on hand to utilize. But Speeduino is not only something new to look at, it looks like an inexpensive solution might even be able to be put together. The more plug and play, the better.
This is the kinda thing that, even for me, it is hard to justify spending a fortune on. If I didn't have them on hand, I wouldn't go buy a MegaSquirt for this project. There is a PNP available for the 22RE on DIYAutotune's website. It is $799. This is actually pretty reasonable for a PNP standalone. But for somebody just hoping to get better gas mileage and MAYBE learn some more about EFI? Not really affordable.
My original question "Does a 22RE board already exist?" has a lot hidden behind it. I actually started a conversation with the board builder I mentioned that brought me here from my first post. He has a Miata board that I can use with MegaSquirt. I actually have a full kit for that on the way.
Well it turns out the boards for the Miata and the Toyota mount into basically the same exact cases. Plugs are different making the case slightly different, but the actual PCB for either is almost identical with identical mounting points. Ignition input signal circuit only needs a small resistor change, if even that.
I haven't done a deep dive on the output side of it yet to compare the Mazda and Toyota. I plan on doing that here shortly after I print out some information. And get a pencil sharpened!
Alright, let's ask a different question. With a board and case limitation that of a Miata ECU, what would be the Speeduino setup to go with? I need some room in the case for hookup, either cutting the PCB from the 22RE and soldering point to point, an adapter board (that I haven't found yet), or possibly even a Miata or Toyota adapter. I might be able to get the 22RE plug to solder to one of those adapter boards.
(I didn't see board sizes listed in the wiki BTW, that would be helpful to know!)
I am okay with just 2 injector drivers, but I want 4 ignition drivers for future use. I want to COP this engine. Already have coils on hand that will work too.
I am thinking the Speeduino v0.3.x looks the part. But again there are no sizes listed. I would prefer a DIY solder it yourself option, but that isn't absolutely necessary. I just enjoy soldering.