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-   -   Sequential Fuel Injection 9495 (https://www.miataturbo.net/mspnp-55/sequential-fuel-injection-9495-a-86806/)

Gregor 11-27-2015 12:17 PM

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.

shuiend 11-27-2015 01:03 PM

Here are wiring diagrams.

Gregor 11-27-2015 01:29 PM

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.

Gregor 11-27-2015 01:49 PM

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?

Gregor 11-30-2015 04:10 PM

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

Gregor 12-04-2015 04:22 PM

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....

90 Turbo 12-05-2015 12:36 AM

What settings did you use in TS?

Gregor 12-07-2015 12:50 AM

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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