I am assuming by the other super helpful posts that these comments are supposed to be funny and sarcastic and not directed at me fully, but just in case it is, or they are halfway serious, let's start at the bottom. And my comments are also meant with amusement and no malice. I am never sarcastic though...
1) Yes I have obviously been reading he wiki, or I wouldn't be asking about board sizes that I can't find on the wiki. Something that one trying to stuff boards where they don't go, would need to know. It is possible I missed them, they were in some secret location only accessible via the dark web. I probably just missed it. I would not be too offended by a "hey idiot try this link out."
2) Plenty of reasons why somebody would need to stuff a board into a stock ECU case. In my case ,I was planning on racing my RV in SCCA.
Okay no not really but I couldn't resist...
But for real I can't find the ECU side plug ANYWHERE AT ALL. And since most of these Speeduino boards don't come with a case, but a factory ECU includes a case and a FREE plug, kinda makes sense.
3) More options added into the engine bay won't have factory plugs there waiting for them. So do what the factory does, make an additional harness. Easy. Original harness left alone. Cheating? Probably, but so is stuffing ecu boards inside of factory cases to circumnavigate racing rules.
4) Actually by changing the distributer and its plug, the stock harness supports now supports the signals the ECU needs for COP. We will ignore the irony that I need to still use a distributer to get the signals for COP... I suspect I might need a harness for the COP coils though.
I have met some of these tech inspectors. Pretty sure I can sneak that by them as long as I appropriately age the harness to match.
5) Thank you for reminding me about the gearbox. I wonder if a newer one would help with fuel economy? Humm.... I could delta my OD switch too... Or make the AC compressor kick on and off when more than say .75g is detected in the slalom course. But for real on the gearbox, that is an interesting thought...
6) I think even the least competent tech inspector will notice no throttle cable and a DBW. I will pass on that. Besides it would be hard to program it for junk crashing around in the house as I am running the slalom.
7) Okay ignoring the fact that most installers I have met ARE morons, there actually are plenty of good reasons for asking for a tune file. I will attempt responding seriously to this one.
So I have done gosh knows how many installs. I have lost full hard drives worth of files and data twice. My last count before the first crash was over 150 custom folders. I have 35 newer folders. This doesn't account for ECUs I built and just sold along without customization.
The amount of questions a running tune file solves, and the hours of research it saves, are PHENOMENAL. Now any installer thinking that this file for a NA car will be safe to put on their customer's turbo car, deserves everything that happens to them.
And remember too all customers think showing up with an RV and expecting it to be such a common thing that you should already know, or you will need to do 5 more installs on the next few weeks, so obviously you should spend hours and hours and days and more researching. because you will do it again next week and THAT customer is magically going to pay for the first install's research. Reality being you will never see another, or be smart enough to charge triple just so they will go away. Or be dumb and pay. True story there is a stupid customer tax. Ask any mechanic.
You left out a good one. I can't tell you how many times people brought me badly running cars thinking a new ecu would fix their blown head gasket, fried coils, or any other odd issues they could pretend didn't exist before the install. If the car isn't running when they bring it in, I can guarantee it will cost them double what they think it should just to start it!
But back to my intent here. I don't need to utilize Speeduino and it makes more sense for me to dump my engine bay harness and do a quick custom MegaSquirt install. I could easily build a new harness in 2-3 days. But, I am trying to make this an exercise that can be repeated by my fellow Toyota RV enthusiasts.
Many of them are not big time tuner gear head types. For them the interest is "Some whacker said I could double my MPG with this!" Normal motorhomes get 8mpg it seems across the board. Our micro Toyota RVs are known for 12-15 mpg. Now looking at the antique engine management and the crappy 1980's choices made, I think this number would be easy to GREATLY improve upon. And if one added a turbo, even more economy AND power.
I have $200 worth of goodies sitting in my Speeduino store cart, including a wideband controller. If I find the right combo that makes this repeatable for that magic range of $200-300, I think even some of the less gear head kinda fellow RV nutcases might attempt to do this (with a good enough roadmap to follow). Now for a fully plug in ready to go solution, I could probably double that price and it would still be worth it for many.
At $200, I am willing to take that plunge and build a system I haven't used before. If I like it, cool. I can potentially sell it along, help a fellow RVer out, and afford to go make two more. I sell 3-5, and I can probably afford to put the turbo on.
Another reason to have an ECU that just plugs in. I am going to have either a factory ecu in my RV, a MegaSquirt, or a Speeduino. And proving the MPG thing might require me putting the stock ECU back in. Obviously before I have made extensive changes like swapping injectors or adding a turbo.