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How to make and install your own Diy MegaSquirt

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How to make and install your own Diy MegaSquirt

Old 12-06-2007, 01:34 PM
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Originally Posted by elesjuan View Post
Can you tell me advantages and disadvantages of soldering the wires directly to the 64 pin connector vs. soldering that connector to a circuit board then soldering wires onto that?
clean vs. messy. once you heatshrink the soldered joints they aren't exposed and you'll tuck the harness somewhere...solder the connector to a board and then wiring into that is extra work, plus you have an exposed board sitting around that could easily make contact with things and ground circuits. so a box would have to be built around it....if that's the case, then you'd throw the MS board into the same box and wire directly from the MS to the connector.


fixing pics now.
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Old 12-06-2007, 01:54 PM
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Originally Posted by elesjuan View Post
Can you tell me advantages and disadvantages of soldering the wires directly to the 64 pin connector vs. soldering that connector to a circuit board then soldering wires onto that?
Not enough room to do what you propose. Look behind your seat and see the distance between the car harness and the factory ECU, you gotta squeeze a harness extension into that gap.
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Old 12-06-2007, 04:44 PM
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So to get these pinouts correct... for the 96-97 that diagram is as if u are looking into the 64 pin connector. the ones labled 3 are the middle section and the ones labeled 2 are the ones on your left? im just somewhat confused of the orientation.

Edit:
also, so did you solder the wires to the connectors? and on the grey connectors... you simply strip the wires put them all in and close up the connector?

I may sound stupid but i dont want to mess this up, sorry!
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Old 12-06-2007, 05:04 PM
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You solder the pins on the large female connector. You strip and crimp pins on the other end, then insert them in the male connector.
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Old 12-06-2007, 06:06 PM
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One other question, general MS thing:
DIYAutoTune sells a boost controll 'mod kit', just a couple of transistors and a diode or something. Is this the same for a MS-II? The guy there says it's for MS-I but I can't imagine it's very different..... Still sinking the same amount of current no matter the electronics driving it.

Ordering tonight, Go Team Me!
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Old 12-06-2007, 06:32 PM
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That is going to be a question for MSEFI.com unless arga knows.
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Old 12-07-2007, 12:38 AM
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Originally Posted by AbeFM View Post
One other question, general MS thing:
DIYAutoTune sells a boost controll 'mod kit', just a couple of transistors and a diode or something. Is this the same for a MS-II? The guy there says it's for MS-I but I can't imagine it's very different..... Still sinking the same amount of current no matter the electronics driving it.

Ordering tonight, Go Team Me!
I'm not totally sure, but I assume that depends on what firmware you're using.. MSnS-E supports that hardware mod, but others might not.. Thats just my uneducated guess.
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Old 12-07-2007, 12:39 AM
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and btw.. Success! Well, can't claim total success, yet... have not tested to see if the thing even works cause its SNOWING!(*[email protected]#

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Old 12-07-2007, 12:39 AM
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FWIW, C31 and C32 are for the variable reluctor (VR) circuit and are not needed with our Hall Input mods. You can still install all of the VR mods and choose what you want via jumpers but they're not used with our mods.
(They can be removed from the colorful assembly diagram.)

Looks good elesjuan.
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Old 12-07-2007, 12:44 AM
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No idea. Sadly, I'm still NA. I seem to remember EBC still on the alpha or beta development list for MS2E for software.

Here's the hardware info:
http://www.msextra.com/ms2extra/MS2-...ware.htm#boost
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Old 12-07-2007, 02:01 PM
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Originally Posted by AbeFM View Post
DIYAutoTune sells a boost controll 'mod kit', just a couple of transistors and a diode or something. Is this the same for a MS-II? The guy there says it's for MS-I but I can't imagine it's very different.....
I believe the reason it says that it's for MSI only (and specifically, MSnS-E, which doesn't exist for MSII) is that at the time that was written there was no firmware for the MSII that supported EBC. The MS2E manual makes reference to EBC vaguely, not sure if it's actually supported yet.

However, from a purely hardware standpoint it doesn't matter which μP you're using or which firmware is on it. To drive a boost control solenoid you'll still need a high-current FET, and that's primarily what the MK-Boost modkit consists of. No harm in installing it now, in the hope that a future firmware release will support it.
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Old 12-07-2007, 02:16 PM
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Originally Posted by 240_to_miata_OWNER View Post
So to get these pinouts correct... for the 96-97 that diagram is as if u are looking into the 64 pin connector. the ones labled 3 are the middle section and the ones labeled 2 are the ones on your left? im just somewhat confused of the orientation.
Looking from the front.

I would recommend looking at the gray plugs from the back and looking at the diagram while wiring them then solder them to the large yellow connector. It just alleviates the confusion with the orientation.
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Old 12-07-2007, 02:21 PM
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this is why i labeled the flat and slotted side. use the large .070" pins as markers to make sure you aren't looking at it backwards.
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Old 12-07-2007, 03:17 PM
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Ordered up my computer, free beer for everyone! Er, assuming most of you can't make it down. :-P

Now I have to start paying attention to details, so depressing. And I need injectors in a big way.
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Old 12-07-2007, 03:40 PM
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Oh, and I had an idea, see what you all think... Since I already have a second injector for each cyl, mounted in the manifold, it's a 300cc injector.. Maybe I could run the two injectors in parallel, with the OEM's at ~250 then I'm running ~550 cc's per cylender.
-Abe.
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Old 12-07-2007, 03:42 PM
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That will work. You could just batch each cylinder with the aux injector.
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Old 12-09-2007, 05:38 PM
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do i need to set the ignition settings in this screen:


I saw this in the manual
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Old 12-09-2007, 05:41 PM
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Yes. You don't use led 18 for spark though. You can change that to warmup.
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Old 12-09-2007, 07:05 PM
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Old 12-10-2007, 06:02 PM
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Originally Posted by Braineack View Post
Step 2:

Configure MegaTune to 'see' the MSnSE software.

Open the MSnSE folder in "EFI" and run the "copyini" application. Once the file has been copied close the DOS window.
  1. Then run the "edit-settings" application and make the following changes
  2. Change the line "#unset MSNS_EXTRA" to # set MSNS_EXTRA" by highlighting the "un" and changing it to a double space.
  3. Change the default "# set MSI" (or whatever it is )to "#unset MSI"
  4. Click on 'File' then 'Save'
  5. Then close the Notepad window.

I can not do this because i couldnt find the "edit-settings" application in the .029 folder. any help would be great!

Edit: NVM i got it working by changing the settings directly in the configurator.

Last edited by 240_to_miata; 12-11-2007 at 11:08 AM.
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