Integrating Megasquirt into stock ECU case - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-27-2008, 10:39 PM   #41
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I'm officially gonna do this as well. Looks great!
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Old 02-28-2008, 12:54 AM   #42
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I'm officially gonna do this as well. Looks great!
Werent you leaving?
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Old 02-28-2008, 01:00 AM   #43
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Thanks Braineack. Well executed!!

Here's the wiring strategy for interested souls:

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Old 02-28-2008, 10:32 AM   #44
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I'm officially gonna do this as well. Looks great!
Maybe you should get your wideband working first newbskittles.
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Old 02-28-2008, 10:39 AM   #45
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neat
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Old 02-28-2008, 07:02 PM   #46
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money, fits like a glove....cant wait to see your finished install Ananth.





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Old 02-28-2008, 08:35 PM   #47
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I have the same thing planned for mine, except instead of soldering the wires directly to the board, I have a male D37 connector which I'm going to solder to the board so that the socket is vertical. I'll be putting holes in the sides for the D9 (for the tuning cable), and the custom D15 connector I'm using for things such as the wideband O2 sensor input. It should result in something clean and factory-looking.

I bought the stock ECU for $20 - I've already looted its connector (for my plug and play harness), a few diodes and a few resistors. Makes sense to use the case too, really.
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Old 02-28-2008, 08:43 PM   #48
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well, you can't get anymore factory-looking than this, can you?

The stock 48-pins are enough I/O for anything you care to run off of it.
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Old 03-18-2008, 01:21 PM   #49
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It Lives!!



The three wires in the foreground is the serial connection. I have added a 3/32 panel mount phone jack which will then be mounted somewhere on the dashboard. I am using the Innovate DB9-to-2.5mm stereo serial cable for communication.

Loaded 029y4 and hand-copied most of the MSPNP 9093 w/o AFM settings.



That's a Thinkpad 600 that I bought for 60 bucks recently. 10 years old and runs like a top, much better than my Lenovo 3000 piece-of-junk.


Look ma, no AFM flapper:




Why? Cause there's something else inside




Its hard not to notice the vacuum line coming straight out of the AFM




Can't wait to get the whole shebang on the car and see how it runs.
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Old 08-11-2008, 09:23 AM   #50
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Quote:
Originally Posted by The_Pipefather View Post
It Lives!!

Why? Cause there's something else inside


Its hard not to notice the vacuum line coming straight out of the AFM


Can't wait to get the whole shebang on the car and see how it runs.
Couldn't you mount the actual MAP sensor inside the AFM case, and use the AFM wires for the MAP signal?


The whole thing looks great
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Old 08-11-2008, 09:58 AM   #51
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Quote:
Originally Posted by giryan View Post
Couldn't you mount the actual MAP sensor inside the AFM case, and use the AFM wires for the MAP signal?
That's exactly what The Pipefather did. The MAP sensor is in the AFM case, and it runs back through the stock wiring. The reason a vacuum hose is run external to the AFM case is that the AFM is not typically placed in a location which sees actual manifold pressure. It is almost always located before the throttle plate, thus whether you are FI or NA, it's not a place where you can take a MAP reading.
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Old 08-11-2008, 10:09 AM   #52
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That's exactly what The Pipefather did. The MAP sensor is in the AFM case, and it runs back through the stock wiring. The reason a vacuum hose is run external to the AFM case is that the AFM is not typically placed in a location which sees actual manifold pressure. It is almost always located before the throttle plate, thus whether you are FI or NA, it's not a place where you can take a MAP reading.
Oh, yeah, doh, of course it is

oops.
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Old 01-08-2009, 01:42 PM   #53
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I know this is an old thread, but thought I would share something I saw on another board regarding this...

Megasquirt for STS2 Miatas - Mazda Forums



The adaptor fits inside the stock ECU housing as does the MS. However, the MS does require a small bit of trimming. The design of the board allows the MegaSquirt to use the Miata's VAM in place of the MAP sensor. Everything so far is bench tested and working properly with a MS plugged in. I just need to finish assembling the MS board that will be used in tuning.
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Old 01-08-2009, 01:52 PM   #54
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Now just make that **** work in a OBD2 car, and PASS an OBD2 scan and I will buy one today.
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Old 01-08-2009, 01:54 PM   #55
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Hah, cool.

None of that is actually needed though. I have it running on my STS2 miata using the stock AFM. Some code changes were necessary, but nothing too complicated. That board just makes the wiring a bit simpler.
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Old 01-08-2009, 02:04 PM   #56
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The board would be cool if it were designed for some extras like the EBC mod and fan control and such. Otherwise integrating into the case for a typical MAP sensor install is really easy and requires little to make it fit.
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Old 01-08-2009, 02:40 PM   #57
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It will appeal to the same crowd as the MSPnP; those who don't want to do any wiring or building, just to buy an off-the-shelf assembly and plug it in, and are willing to pay a premium for this.

I'd wager that these folks constitute a majority of owners, given DIY's success with the PnP series.
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Old 03-12-2009, 06:32 AM   #58
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Out of intrest, did your buy a new connector (yellow one) or butcher the one out of the stock ecu? Just that here in the UK its not easy to get hold of the female ECU plug (the yellow one), but I dont need my stock ECU so wondered if its easy enough to remove that one?

Thanks
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Old 03-12-2009, 11:09 AM   #59
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Stock connector, cut off from the board. Then using a strip of aluminum you can bolt it back to the ECU frame, you can see in the pictures above.
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Old 03-12-2009, 01:00 PM   #60
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Quote:
Originally Posted by Braineack View Post
The board would be cool if it were designed for some extras like the EBC mod and fan control and such. Otherwise integrating into the case for a typical MAP sensor install is really easy and requires little to make it fit.
The main point of that board was to get around certain "any modification to the ECU is legal as long as it fits in the stock case and does not use any additional wires" types of rules that some racing classes have. So it wouldn't have EBC (no series I can think of has both that sort of wording and allows turbo Miatas) or allow a MAP sensor.
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