Updated 'How to MegaSquirt your Miata' article is coming together!
#1
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Updated 'How to MegaSquirt your Miata' article is coming together!
You guys have been using my 'How to MS your DSM' article for quite a while now so I decided it's high time you had your own
Check it out, how to build your own DIY MegaSquirt solution for your Miata:
http://www.diyautotune.com/tech_arti...azda_miata.htm
Let me know if you have any changes/updates/additions etc so we can work through any remaining details to come up with the authoritative source of info, in one place.
Also- for anyone interested in a full Plug-n-Play solution for your 90-95 Miata be sure to check out the MegaSquirtPNP at http://www.megasquirtpnp.com
Check it out, how to build your own DIY MegaSquirt solution for your Miata:
http://www.diyautotune.com/tech_arti...azda_miata.htm
Let me know if you have any changes/updates/additions etc so we can work through any remaining details to come up with the authoritative source of info, in one place.
Also- for anyone interested in a full Plug-n-Play solution for your 90-95 Miata be sure to check out the MegaSquirtPNP at http://www.megasquirtpnp.com
__________________
Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
Last edited by FoundSoul; 08-06-2007 at 08:59 PM.
#2
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You guys have been using my 'How to MS your DSM' article for quite a while now so I decided it's high time you had your own
Check it out:
http://www.diyautotune.com/tech_arti...azda_miata.htm
Let me know if you have any changes/updates/additions etc so we can work through any remaining details to come up with the authoritative source of info, in one place.
Check it out:
http://www.diyautotune.com/tech_arti...azda_miata.htm
Let me know if you have any changes/updates/additions etc so we can work through any remaining details to come up with the authoritative source of info, in one place.
#4
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Jerry,
there are two types of cam+crank angle sensors on the Miata: The optical and the magnetic. Both provide *2* signals on the inner track (ring), which is the CMP signal - not just one.
I also had to remove D1 & D2 (and jumper them with wires) to have my CAS (magnetic type) properly recognised. Then again, I'm not sharing mine with the stock ECU (retrofit).
Last of all: "Spark Output to factory DSM ignitors" should be changed to "Spark output to factory Miata ignitors".
Jim
there are two types of cam+crank angle sensors on the Miata: The optical and the magnetic. Both provide *2* signals on the inner track (ring), which is the CMP signal - not just one.
I also had to remove D1 & D2 (and jumper them with wires) to have my CAS (magnetic type) properly recognised. Then again, I'm not sharing mine with the stock ECU (retrofit).
Last of all: "Spark Output to factory DSM ignitors" should be changed to "Spark output to factory Miata ignitors".
Jim
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Fixed that DSM remnant
On that magnetic CAS... Hall Sensor or toothed wheel with VR sensor? Specific to certain years?
On that magnetic CAS... Hall Sensor or toothed wheel with VR sensor? Specific to certain years?
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Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
#8
You guys have been using my 'How to MS your DSM' article for quite a while now so I decided it's high time you had your own
Check it out:
http://www.diyautotune.com/tech_arti...azda_miata.htm
Let me know if you have any changes/updates/additions etc so we can work through any remaining details to come up with the authoritative source of info, in one place.
Check it out:
http://www.diyautotune.com/tech_arti...azda_miata.htm
Let me know if you have any changes/updates/additions etc so we can work through any remaining details to come up with the authoritative source of info, in one place.
#9
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mine bought and arrived from your side of the pond last weekend, built the Stim, and an just filing the case/board to fit as I type. I'm a little worried I've no way of testing the Stim tho....
I need a Stim for the Stim.... ;-)
Decided to do a build log on the UK MX5/Miata/Roadster forum i frequent
http://www.mx5nutz.com/forum/index.php?showtopic=17029
#10
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Lol ... I have megasquirt assembled and modded, wiring harness, wideband and controller, Gm AIT/CLT sensors (probly not use the clt though) ... and no freaking laptop!! I should just go ahead and splice it in anyways since it is for my project car after all.
Foundsoul, thank you very much for the work you are doing!
Foundsoul, thank you very much for the work you are doing!
#11
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Lol ... I have megasquirt assembled and modded, wiring harness, wideband and controller, Gm AIT/CLT sensors (probly not use the clt though) ... and no freaking laptop!! I should just go ahead and splice it in anyways since it is for my project car after all.
Foundsoul, thank you very much for the work you are doing!
Foundsoul, thank you very much for the work you are doing!
#12
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ya there are cheap laptops out there, but i havnt found exactly what im looking for. Ive been looking around but been kinda picky wanting something at least 500mhz or so and 100 bucks or so and so far no luck on craigslist and ebay. Ill probably end up just borrowing one from someone for temporary. Anyway weve gotten off topic now
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That's correct-- Justin Gray brought his car over yesterday for some testing, and it actually started first try using the hardware mods we have listed, so we didn't see any need to remove the transistors or anything else like that. We tested the Spark Output inverted setting and found the ignitor got up to about 135F with it set to Inverted, it turns out that non-inverted (normal) is the proper setting for this car at least. We dialed in the base timing and tuned idle AFR and had it purring pretty good. Unfortunately later in the day (after swapping back to the stock ECU) his ignitor went out on him. Probably had to do with it getting hot when that Spark Output inverted setting was wrong, so we're going to replace that and then move on to dialing it in.
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Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
#18
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Yep-- the LEDs work just fine. We've got a couple things to look into still, but nothing major.
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Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
Jerry a.k.a. 'FoundSoul'
DIYAutoTune.com
'91 Miata BEGi S3 GT2560 w/ MSPNP - 14.1psi - 253whp, 232wtq
'95 Miata n/a
A few other cars....
#19
Something that may work just as well. Is replacing R26 & R29 with as large of a resistor as you can run and still get the transistor to switch. Then connecting a 330ohm resistor inline with the jumper wire soldered directly to the top of R26 & R29.
Just so you know I had timing running "correctly" on my 91 on a few diffrent pull up schemes and eventually I ended up frying 2 ignitors and my tach. As the 90-93 get thier tach signal from the ignitor.
Just so you know I had timing running "correctly" on my 91 on a few diffrent pull up schemes and eventually I ended up frying 2 ignitors and my tach. As the 90-93 get thier tach signal from the ignitor.