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Old 12-07-2013, 03:47 PM   #1
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Default MSPNP2 for 96/97 not seeing car RPMs

Hi all. I am on the final stages of finishing my turbo build, and in the process of tuning my car. I have a professional tuner doing the work. I am using a MSPNP2 from diyautotune, and it seems to have a defect. The MS will not see any RPMs coming from the car, and in turn, the car will not start. We thought that the issue may have been a bad CAS, but we swapped in a working CAS and the problem still remains. I believe that issue is with the MS. I have sent an email to DIYautotune with hopes to hear back soon.

Has anyone seen a similar problem before? How often to MS's come from diyautotune that have issues? Does anyone have any advice for me? I'd like to hear back from diyautotune before opening the case, and looking at the wiring.

For the record, everything else on the megasquirt is working.

Last edited by Leach0789; 12-13-2013 at 02:26 PM.
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Old 12-07-2013, 04:10 PM   #2
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I will also add that we swapped in the stock ECU and the car started right up and ran. We also pinned back the wiring harness from the CAS to the ECU harness and everything is working as expected.

The LED on the MS doesn't blink, and I get no trigger signal in the logger.

Last edited by Leach0789; 12-07-2013 at 04:32 PM.
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Old 12-07-2013, 04:33 PM   #3
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Definitely call DIY about it. There was a thread on another forum recently (which I can't find now, of course) where the guy was having an issue with (I think) a DIYPNP and apparently DIY had a supplier change a component packaging on them without saying anything and it could short to the board. They said to send it in and they'd fix the issue.

DIY have always been pretty good to deal with from my personal experience and what I've seen of others.
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Old 12-07-2013, 04:36 PM   #4
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Definitely call DIY about it. There was a thread on another forum recently (which I can't find now, of course) where the guy was having an issue with (I think) a DIYPNP and apparently DIY had a supplier change a component packaging on them without saying anything and it could short to the board. They said to send it in and they'd fix the issue.

DIY have always been pretty good to deal with from my personal experience and what I've seen of others.
This one? https://www.miataturbo.net/mspnp-55/...utotune-76222/

Does anyone have their phone number?
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Old 12-07-2013, 05:25 PM   #5
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This one? https://www.miataturbo.net/mspnp-55/...utotune-76222/

Does anyone have their phone number?
Ya, that was it. Apparently a MSPNP2 not a DIYPNP. That's why I was looking for the thread, but for some reason I didn't think it was on here.

Don't have their number and it doesn't appear on their website that I can find.
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Old 12-09-2013, 10:40 AM   #6
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Ya, that was it. Apparently a MSPNP2 not a DIYPNP. That's why I was looking for the thread, but for some reason I didn't think it was on here.

Don't have their number and it doesn't appear on their website that I can find.
Sorry - I had a typo. Mine is also an MSPNP2.
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Old 12-09-2013, 11:47 AM   #7
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Can you post a copy of the current tune and a composite log of an attempted start? This will give more information about what is and is not working.
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Old 12-09-2013, 11:48 AM   #8
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Can you post a copy of the current tune and a composite log of an attempted start? This will give more information about what is and is not working.
Hi Matt,

Thank you for the reply. We spoke on the phone this morning regarding my issue. I am in the process of getting the .msq file and the composite log and will send them on to you.
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Old 12-09-2013, 03:27 PM   #9
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I already emailed these to Matt, but if anyone else is interested, I have attached the composite logger and .msq file.
Attached Files
File Type: csv composite loggger during crank.csv (10.2 KB, 49 views)
File Type: msq 2013-12-09_13.55.37.msq (108.2 KB, 49 views)
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Old 12-16-2013, 05:08 PM   #10
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After some troubleshooting, it is indeed the MSPNP that is the issue. I will be sending it in for repair.
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Old 12-17-2013, 09:00 AM   #11
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After some troubleshooting, it is indeed the MSPNP that is the issue. I will be sending it in for repair.
I had the same issue, it was a faulty processor
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Old 12-17-2013, 10:31 AM   #12
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I had the same issue, it was a faulty processor
Where were you a week and a half ago!!! Lol
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Old 03-24-2014, 04:51 PM   #13
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Would the engine crank but not fire? I'm having that problem right now. I bought my mspnp in late Novembe and just installed it on Saturday.
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Old 03-25-2014, 04:10 AM   #14
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Have you checked your firing in the correct sequence with a spark test ?
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Old 04-01-2014, 03:13 PM   #15
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Would the engine crank but not fire? I'm having that problem right now. I bought my mspnp in late Novembe and just installed it on Saturday.
Sorry - I missed these until now. Yes, that was the exact issue. They didn't tell me what the exact cause was. But, since this thread was revived, I might as well update you guys. As you can see, I sent the MS to DIY on December 16th. It took FIVE weeks for the repair to be done. When I finally received it, the car started, but only ran 3 of the injectors correctly. The 4th injector was stuck open, which nearly hydrolocked my motor when it was first started. We got back in touch with DIY, and after another MONTH of troubleshooting (delayed responses from DIY and many requests from them that I felt were unnecessary), it was sent back to DIY again. We were sure that the problem was MS again since the injector was stuck open even on DIY's tune, but DIY was fairly certain it was something that we did in the tune. Low and behold, we sent it back, and DIY said that the MS had serious issues and was beyond repair. They finally sent me a new unit, and my car is running as of last week.

Now I'm stuck with many labor hours from the shop who was "diagnosing" the MS with all of DIY's requests. It has been a very long journey of poor communication and bad customer service.

This is just a rough and short recap of my experience. If anyone is interested in a full timeline of the story, I could put one together with all of the emails I have saved.
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Old 04-01-2014, 06:02 PM   #16
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Leach, I'm sorry this one went badly. We've hired another solder tech to help get repairs turned around faster and made changes to the way we track RMAs to prevent this from happening again.
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Old 04-17-2014, 06:04 PM   #17
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Sorry - I missed these until now. Yes, that was the exact issue. They didn't tell me what the exact cause was. But, since this thread was revived, I might as well update you guys. As you can see, I sent the MS to DIY on December 16th. It took FIVE weeks for the repair to be done. When I finally received it, the car started, but only ran 3 of the injectors correctly. The 4th injector was stuck open, which nearly hydrolocked my motor when it was first started. We got back in touch with DIY, and after another MONTH of troubleshooting (delayed responses from DIY and many requests from them that I felt were unnecessary), it was sent back to DIY again. We were sure that the problem was MS again since the injector was stuck open even on DIY's tune, but DIY was fairly certain it was something that we did in the tune. Low and behold, we sent it back, and DIY said that the MS had serious issues and was beyond repair. They finally sent me a new unit, and my car is running as of last week.

Now I'm stuck with many labor hours from the shop who was "diagnosing" the MS with all of DIY's requests. It has been a very long journey of poor communication and bad customer service.

This is just a rough and short recap of my experience. If anyone is interested in a full timeline of the story, I could put one together with all of the emails I have saved.
That's crazy mine was exactly the same but somehow my injector became unstuck a few days later. I've reinstalled mine and car runs albeit not smoothly because I can't seem to get the wideband set up correctly. I was lucky and it only took a few days to get my mspnp back after sending it in for this problem. Dedicated tech support would be nice though. A bit of a pain waiting on replies but Matt has been helpful in my case. Your problem must have helped them solve mine quicker so thanks for that lol.
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Old 04-17-2014, 09:11 PM   #18
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Originally Posted by Leach0789 View Post
Sorry - I missed these until now. Yes, that was the exact issue. They didn't tell me what the exact cause was. But, since this thread was revived, I might as well update you guys. As you can see, I sent the MS to DIY on December 16th. It took FIVE weeks for the repair to be done. When I finally received it, the car started, but only ran 3 of the injectors correctly. The 4th injector was stuck open, which nearly hydrolocked my motor when it was first started. We got back in touch with DIY, and after another MONTH of troubleshooting (delayed responses from DIY and many requests from them that I felt were unnecessary), it was sent back to DIY again. We were sure that the problem was MS again since the injector was stuck open even on DIY's tune, but DIY was fairly certain it was something that we did in the tune. Low and behold, we sent it back, and DIY said that the MS had serious issues and was beyond repair. They finally sent me a new unit, and my car is running as of last week.

Now I'm stuck with many labor hours from the shop who was "diagnosing" the MS with all of DIY's requests. It has been a very long journey of poor communication and bad customer service.

This is just a rough and short recap of my experience. If anyone is interested in a full timeline of the story, I could put one together with all of the emails I have saved.
Leach,
Please email me at [email protected] with that summary so that I can investigate, and like Matt said, make sure measures are in place to ensure that no one ever has these types of issues in the future. We have hired 3 more people to increase our production and tech support abilities. I can help make sure that their talents are leveraged correctly and that problems are handled as efficiently as possible.
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Old 04-21-2014, 05:17 PM   #19
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Leach,
Please email me at [email protected] with that summary so that I can investigate, and like Matt said, make sure measures are in place to ensure that no one ever has these types of issues in the future. We have hired 3 more people to increase our production and tech support abilities. I can help make sure that their talents are leveraged correctly and that problems are handled as efficiently as possible.
Hi Ben,

Thanks for the reply. I've sent you an email.
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