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Old 11-27-2015, 01:17 PM   #1
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Default Sequential Fuel Injection 9495

I am having problems trying to wire my up my diypnp ver 1.5 board for sequential fuel injection. I cannot find a pin out diagram for the 94-95 Miata.

I can only find 9697 which shows as:

Batch: INJ1 4U,4W
INJ2 4V, 4X

Seq: INJ1 4U
INJ2 4W
INJ3 4V
INJ4 4X

My best guess for the 9495 then would be:

Batch: INJ1 4Y, 4Z
INJ2 4U, 4Z

Seq: INJ1 4Y
INJ2 4Z
INJ3 4U
INJ4 4Z

But I really don't want to guess, If anyone has a pin out for the injectors I would greatly appreciate it.

Thanks in advance.
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Old 11-27-2015, 02:03 PM   #2
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Here are wiring diagrams.
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Old 11-27-2015, 02:29 PM   #3
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Thank you. From I understand, on a 95 us Miata harness

INJ1 2U
INJ2 2V
INJ3 2Y
INJ4 2Z

Now I just need to trace back the jumpers on the MS side.
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Old 11-27-2015, 02:49 PM   #4
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Ok, my educated guess for a 95 Miata is now

Sequential fuel injection:
INJ1 4U
INJ2 4V
INJ3 4Y
INJ4 4Z

Does this seem correct?
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Old 11-30-2015, 05:10 PM   #5
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After getting a reply from diyautotune:

"The injectors would wire corespondent to engine firing order. If your firing order is the typical 1-3-4-2, then injector 1 output would wire to cylinder 1, injector 2 output to cylinder 3, and so on."

Based on this, my new plan is

MS Board_____MX5_______MS
INJ1_________2U(INJ1)___4U
INJ2_________2Y(INJ3)___4Y
INJ3_________2Z(INJ4)___4Z
INJ4_________2V(INJ2)___4V
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Old 12-04-2015, 05:22 PM   #6
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I got it right!!!! It idles so smooth steady now. Now, on to the 6 speed, more boost, and 3.6 gears.... Man, every time I think I'm getting closer to finishing the car....
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Old 12-05-2015, 01:36 AM   #7
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What settings did you use in TS?
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Old 12-07-2015, 01:50 AM   #8
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I mostly followed:Mega Miata: February 2015
I believe the writer is a member on this forum, but I can't remember the name.
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