This is from the V3 assembly guide... I dont think they mind us using the image...


http://www.automotiveexpression.com/v3ext_wiring.gif

The Grounds are on the long(wide) side of the plug.

Most of the sensors and controls are on the narrow side of the plug...

So using this diagram and numbering, starting at the top left.

1-19 row : 8/9/10/11 & 19 are grounds for the MS

20-37 row: In the Miata setup, we dont use the stepper IAC, but we steal those plugs holes for other funtions.. (cas, coil)...


20 - Air Intake Temp
21 - Coolant Temp
22 - Throttle Position sensor
23 - 02 Sensor
24 - RPM Signal (CAS Signal?)
25 - 1A RPM Signal (CAS Signal?)
26 - TPS signal 5vref
27 - 1B Coil
28 - Power 12V
29 - 2A Coil
30 - Idle Air Control (this requires using the DIYautotune Idle Air Mod Kit)
31 - Not used
32 - 33 - Tied together Injectors
34 - 35 - Tied together Injectors
36 - Not Used - This ignition is not used in my setup (see 27 / 29)
37 - Not Used - I am wiring the FP to come on when the ignition is on at Diag port.

Any Input, am I missing anything ?

The only thing that could be worthwhile adding (specially for a NB engine in a NA like kags1969 and I are running) is to use pin 31 with the shift light control to activate the VICS on the NB engine.

This is the connector that I bought from boomslang for $20 and soldered it up to the MS DB37 connector... My plan is to make this plug and play...

I will add the ecu connector pinouts and ms pinouts when I have a little more mental energy...


http://www.automotiveexpression.com/ms10.jpg

http://www.automotiveexpression.com/ms11.jpg

Kags This is amazing, makes me upset i went with emanage instead of MS but in a few years im sure ill be using this tutorial too. Thank you!

kags, we love you.

I really apreciate the time you put into all these tutorials, always top shelf my man. I owe you a beer if you come through Denver.

Come through Jersey and I'll make it two.:beer:

Even if you're just passing through and making a connecting flight, it's only 40 miles out to DIA, I'll be there :cool:

Kags that PnP harness is a great idea!. (I bet you can make some money making them..) Only issue I see is the Fans and fuel pump (and whatever else the ecu turns on that I dont know about!), could you post in detail how you did this when you do it :gay:

Awww :ughug:

mmmmmmm....beer.....

Well i got the kit from diy

""This is a simple two-part kit with a 1/4w 620ohm resistor to replace R19 and a ZTX688b to replace Q4."


http://www.automotiveexpression.com/ms21.jpg


http://www.automotiveexpression.com/ms22.jpg


This means that theoretically I should be able to plug this bastard in tomorrow...

Anybody wanna share their msq file? Aussie? kags1969@yahoo.com if your feeling generous...

C'mon Kags did you get that thing running!? I am dying to know.

I am having usb/com issues, so i ordered a new usb/serial adapter....

Ah, I see. I have a old as balls p1 300mhz (yup its really 300mhz) w/32 mb of ram for MS. It only has 32mb of ram so I hope it will be ok, but it has serial ports so that will make life easyer.

KAGS dont they have fry's electronics out there? I bet they have what you need, I shop at that hell hole all the time. Its shitty service but they have a good stock of things like that. I found a rareish ATI dvi--> component adapter there last week!

I/m using either 8 or 16 mb of RAM--Win 95...

awesome my computer is a powerhouse :gay: . Anyways the battery is dead using one of those inverters that plug into the cigarette lighter to power it will be ok right? (sorry about the derail.) the ac adapter still works! :)

any updates on this? I'm becomeing more and more interested in going to MS with my '93, as i'm going to boost and figure that if i MS first, i'll have better options for fuel once i start boosting and get the pwoer bug.

problem is that i'm nervous as hell about taking the plunge, so i've been following this thread.

looks like it's not too painful, though, overall.

Update?
 

Hi kegs...

any update on this? I have been leaning towards the e-manage till I saw your thread here... please please please do give us an update :)

thanks!!

Well, here is the update....

I melted a piston in my Emanage Ultimate 2000 Miata, and had to swap in another motor. Finished that a couple of weeks ago. I pulled the 1.6L out of the Blue Car (getting the MS) and have been prep-ing a 1.8L to go in. I have also been fabbing up intercooler pipping and such while the engine is out of the car, so I have a little room to work. I would like to stick the motor this weekend, then I will have to fab and exhaust etc. etc. after I have it running on the stock ecu, I will try the swap over. So you have a little bit of waiting to do before I add anything significant to the write up... sorry, I'd be running had I not melted that piston.. se la ve.

Chris

Getting Ready to stab that motor so I thought I better get back on this...

Here is an updated ECU Pinout -> MS Pinout and I have included the stock wire colors to help in identifying stuff. This is untested, but I think it is on the right track...

20 - Air Intake Temp (ECU 2P) (red-green)
21 - Coolant Temp (ECU 2Q ) (Blue-White)
22 - Throttle Position sensor (ECU 1N) (Red)
23 - 02 Sensor (ECU 2N) (Red-Blue)
24 - RPM Signal (ECU 2E) (white)
25 - 1A RPM Signal (ECU 2I) (Black-White)
26 - TPS signal 5vref (ECU 2L) (Lt Green – White)
27 - 1B Coil (ECU 1G) (Brown-yellow)
28 - Power 12V (ECU 1B) (White – Red)
29 - 2A Coil (ECU H) (Brown)
30 - Idle Air Control (ECU 2W)
31 - Not used
32 - 33 - Tied together Injectors (ECU 2U) (Yellow)
34 - 35 - Tied together Injectors (ECU 2V) (Yellow – Black)
36 - Not Used - This ignition is not used in my setup (see 27 / 29)
37 - Not Used - I am wiring the FP to come on when the ignition is on at Diag port

Here are the relevant Pinouts on the 90 ECU with wire colors... I pulled this stuff from schematics, and haven't tested it yet, but it should be close...

90 ECU Pin-out

1B = Power (White – Red)
1G = igniter 1-4 (Brown-yellow)
1H = igniter 2-3(Brown)
1M =
1N = Throttle Position Sensor (Red)

2A = Ground (Black)
2C = Ground (Black – Lt Green)
2E = Crank Angle Sensor (white)
2G = Cam Angle Sensor (Yellow-Blue)
2I = RPM Signal (Black-White)
2N = O2 Signal (Red-Blue)
2O = Airflow Sensor (red)
2P = Air Temp Sensor (red-green)
2Q = Water Temp (Blue-White)
2U = Injector 1/3 (Yellow)
2V = Injector 2/4 (Yellow – Black)
2W = Idle speed Control (Blue-Orange)