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Old 03-08-2014, 10:15 AM   #1
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Default 2001-2005 DIY megasquirt build documentation?

I have a 2003 Miata, and I was hoping to buy a megasquirt from Braineak, but he seems to be taking a hiatus of an unspecified duration. I have started looking into building my own, but it seems like there's not very much documentation for 2001-2005 megasquirts.

The DIYautotune folks only go up through 2000; will that work for 2003 also? I'm not terribly confident in my electrical engineering skills, but I can follow directions if they are detailed enough. so I guess my questions are:

Is there a pre-assembled PNP MS specifically for 2001-2005?

If not, is there any difference between building an MS for 2000 and 2001-2005?

If yes, is there a detailed build document somewhere?

I would like to be able to run the MS in parallel with the stock ECU, just like Brain had it set up, so I don't have to worry about VVT (though I think someone mentioned to me recently that MS3 can do VVT? I haven't seen anything else about that though).

I hope this isn't a redundant question; I've done quite a bit of searching, and it seems like MS documentation is scarce for post 2000 models. If this has been covered elsewhere, please direct me to the appropriate thread.


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Old 03-08-2014, 10:44 AM   #2
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Of course there is a Megasquirt for the 2001-2005; PM me for more.
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Old 03-09-2014, 02:46 PM   #3
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Here you go, full instructions.
If you don't like the connector inside the case, no problem, just make a wiring loom.
99-05 MS3 | Frank's Westfield MX5 99-05 MS3 |
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Old 03-10-2014, 09:29 AM   #4
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That's perfect, thanks very much! I looked over the instructions for a while yesterday, and it's not as intimidating when you see all the steps laid out like that.
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