MSPNP installed...What happened to my tach? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-26-2008, 11:34 AM   #21
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We will be working with Bryan on testing out his unit and seeing if it needs any changes. I've set this up with him by PM but wanted to fill the rest of the forum in on what's going on.
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Old 03-26-2008, 01:58 PM   #22
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did he try to move the one wire first like suggested a couple times?
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Old 07-10-2008, 01:48 AM   #23
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Default Rehashing an old thread - Car is running again

Tach is still not working. Matt Help!


Recap:
  1. Installed MSPNP. Runs fine but stock tach is dead
  2. Put stock ECU back in. Runs fine and tach works again.
  3. Sent the MSPNP back to DIY for mods
  4. Car on jackstands for 4 months while rebuilding motor
  5. Started fresh motor yesterday with stock ECU. Fired on first crank. Runs perfectly. Tach works.
  6. Installed MSPNP. Runs fine but stock tach is dead


95.5 M-edition w/3 wire coilpacks
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Old 07-10-2008, 09:07 AM   #24
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Ok, I still see no mention of you moving the pin from 1f to 2i. Move the pin and get back to us. This was suggested a couple times.
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Old 07-10-2008, 09:32 AM   #25
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Artie, we did that internally.

Bryan, could you post your MSQ? I'll check to see if you need to change anything in MegaTune to enable the tach.
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Old 07-10-2008, 11:19 PM   #26
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Placing my bet on the ECU being loaded with MM9495 firmware.
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Old 07-13-2008, 05:42 PM   #27
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Any final word on this?
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Old 07-14-2008, 07:19 AM   #28
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Not yet. Working too much... Anyways I'm gonna drive it around for a few with the stock ECU to break the motor in.

FWIW, I'm a little disappointed with the '99 head. + motor rebuild. I 'm pretty sure I'm down on power. I guess this can be attributed to the low comp turbo pistons but I thought the better head + fresh motor would keep me on par with a worn out 135K mi. motor. Guess not.

Turbo going in as soon as I figure out this MS thing.
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Old 07-14-2008, 10:08 AM   #29
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Please post your MSQ, I'd like to check the tach output settings and see if they need any changes.
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Old 07-14-2008, 11:27 AM   #30
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OK
Here's my msq
Attached Files
File Type: zip megasquirt200807090300.zip (5.6 KB, 36 views)
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Old 07-14-2008, 11:29 AM   #31
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tach pin should be on X2....IIRC. your map shows it off.
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Old 07-14-2008, 03:18 PM   #32
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Looks like it has the tach output turned off. Go to More Settings -> Tacho Output Pin and change it to X2 (JS0). Let me know if that fixes it.
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Old 07-14-2008, 03:44 PM   #33
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Quote:
Originally Posted by Savington View Post
Placing my bet on the ECU being loaded with MM9495 firmware.
I run the 94-95 firmware on my 97.. the tach output settings are all in the msq.
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Old 07-16-2008, 01:07 AM   #34
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Hallelujah, it works. Must have been the pin swap thing since I played with the tacho settings before with no avail.

Thanks guys!
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Old 07-18-2008, 06:44 PM   #35
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Ok so question here on the 94 Miata's what pin on the stock harness is deserving of the tach signal?
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Old 07-21-2008, 08:48 AM   #36
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On a '94 the tach signal comes from the coils.
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