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Old 09-21-2016, 02:24 PM   #21
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Just run full retard on the cam timing by putting in the MS2 and leaving VVT unplugged. This is what the VVT locks at if uncontrolled, and is also good for peak power. Should be just fine on track with some loss of midrange.

Maybe buy a new battery.
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Old 09-21-2016, 02:26 PM   #22
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Looking back into the pinout here MegaSquirtPNP by DIYAutoTune.com I can see that connector 2 has pin 2I (alternator field) and pin 2K(alternator voltage ref), which are for controling the alternator I assume. I did not wire these up to anything
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Old 09-21-2016, 02:34 PM   #23
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Quote:
Originally Posted by konmo View Post
Looking back into the pinout here MegaSquirtPNP by DIYAutoTune.com I can see that connector 2 has pin 2I (alternator field) and pin 2K(alternator voltage ref), which are for controling the alternator I assume. I did not wire these up to anything
You are assuming correctly I would bet.

If you just want to get up and running, swap on your older 1.8 NA alternator and run the MS2. It will control the engine fine. VVT just will not be enabled. Then once you get your MSPro back then you can work on getting VVT working.
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Old 09-21-2016, 03:23 PM   #24
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You are assuming correctly I would bet.

If you just want to get up and running, swap on your older 1.8 NA alternator and run the MS2. It will control the engine fine. VVT just will not be enabled. Then once you get your MSPro back then you can work on getting VVT working.
Good thing I was logging! Check this out...I think you guys are right. Alternator overcharging...

Attached Files
File Type: msl 2016-09-20_23_modified.msl (927.4 KB, 12 views)
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Old 09-21-2016, 03:32 PM   #25
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For sixth sense
Thanks for the Cat!
I am running two VVT swaps with DIYPNP and VVTuner's in my cars at the moment. A '90 with a VVT motor in my Racecar and a VVT motor in my '99 daily. On the NA, I am running a NA8 (1.8) alternator. On the the '99 I am running a stock '99+ alternator, but I have the voltage regulator circuit built into the DIYPNP. You can use the MS2, and leave the VVT soleniod unplugged as stated. It stays at fully retarded, which only really affects the mid-range.
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Old 09-21-2016, 04:45 PM   #26
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you could techincally wire up an on/off output.
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Old 09-21-2016, 10:26 PM   #27
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I'm in the same boat - internally dead MS2 built by Reverant. Can't get in touch with Peter so far and nobody else is able/willing to repair.. Matt at DYI has been great with quick email replies, but they wouldn't touch Reverant-built stuff. Dimitris is not responding.

This is so frustrating. What to do? Buy a PnP and try to move the tune over? The problem should be fixable, the unit randomly reporting 18V and shuts down, while the actual input voltage is stead 12V (well, 13V or so) via voltmeter. R3 and R6 had been checked, R3 replaced just in case - no difference.
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Old 09-22-2016, 12:56 AM   #28
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I'm in the same boat - internally dead MS2 built by Reverant. Can't get in touch with Peter so far and nobody else is able/willing to repair.. Matt at DYI has been great with quick email replies, but they wouldn't touch Reverant-built stuff. Dimitris is not responding.

This is so frustrating. What to do? Buy a PnP and try to move the tune over? The problem should be fixable, the unit randomly reporting 18V and shuts down, while the actual input voltage is stead 12V (well, 13V or so) via voltmeter. R3 and R6 had been checked, R3 replaced just in case - no difference.
I feel ya man. Freakin sucks, but oh well not much more i can do now. I sent my mspnp pro to DIY autotune earlier today to get repaired. For the meantime I'm going to try and get it running on my mspnp gen 2 with the vvt disconnected.
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Old 09-22-2016, 12:10 PM   #29
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I feel ya man. Freakin sucks, but oh well not much more i can do now. I sent my mspnp pro to DIY autotune earlier today to get repaired. For the meantime I'm going to try and get it running on my mspnp gen 2 with the vvt disconnected.
I can send you my spark map that I use in my Racecar which is normally aspirated. It should get you in the ballpark. You will need to use Premium only, however. Also this map was good for 144whp on 93 octane.
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Old 09-22-2016, 01:30 PM   #30
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I can send you my spark map that I use in my Racecar which is normally aspirated. It should get you in the ballpark. You will need to use Premium only, however. Also this map was good for 144whp on 93 octane.
yeah sure let me see it. not sure if you could just pm me or something?
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Old 09-22-2016, 02:16 PM   #31
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You really should be using hardware alternator control. Every time you have a voltage spike you're a step closer to damaging your MS. As injector dead time is directly related to battery voltage, your AFR will change with battery voltage (unless set your dead time to voltage 100% correctly - but how do you find out?). IOW, switching on your headlights, A/C or even winding up your windows can cause voltage swings with a corresponding AFR swing.
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Old 09-22-2016, 02:20 PM   #32
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unplug alternator, tune deadtime voltage curve at idle as the voltage drops
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Old 09-23-2016, 09:45 AM   #33
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Originally Posted by nile13 View Post
I'm in the same boat - internally dead MS2 built by Reverant. Can't get in touch with Peter so far and nobody else is able/willing to repair.. Matt at DYI has been great with quick email replies, but they wouldn't touch Reverant-built stuff. Dimitris is not responding.

This is so frustrating. What to do? Buy a PnP and try to move the tune over? The problem should be fixable, the unit randomly reporting 18V and shuts down, while the actual input voltage is stead 12V (well, 13V or so) via voltmeter. R3 and R6 had been checked, R3 replaced just in case - no difference.
Trackspeed Engineering is now working as the US distributor for Reverant; they may be able to help.
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Old 09-23-2016, 01:39 PM   #34
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Yesterday afternoon I swapped over to a NA 94-97 alternator, I also replaced my front headlights and all 4 turn signal bulbs. I plugged in my MSPNP2, and updated to the most current firmware. I am still not using a CAS on the exhaust cam or whatever the older way of running these engines was, should I have to since VVT will stay disconnected for now? The wiring stayed the same for the most part expect a few things. The signal wire for my crank sensor is now connected to 2E(white) on the main ECU harness and cam signal is connected to 2G(yellow/blue) on the same harness. I also connected INJ 1/3 to 2U(yellow) on the main ECU harness and INJ 2/4 to 2V(yellow/black) on the same harness, so now they should be wired in batchfire. It looks like my MTX-L wideband got fried when the ECU went, so I have another one on the way, should be here soon. I believe I have everything wired up correctly, can someone confirm this? Also is there a basemap that I can use to start the VVT engine? There is one for the MSPNP Pro, but I did not see one for the MSPNP2. Can I use the base map for a 99-00 or does someone here have a map I can use to compare and hopefully get me atleast started?
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Old 09-23-2016, 02:29 PM   #35
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- NB sensors are fine
- Sensor wiring is correct, assuming you have 12V/GND/SIG pinout right at each NB sensor
- Use semi-sequential fuel with your wiring (sequential off is TBI)

At the very least, get your battery checked.
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Old 09-23-2016, 03:56 PM   #36
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- NB sensors are fine
- Sensor wiring is correct, assuming you have 12V/GND/SIG pinout right at each NB sensor
- Use semi-sequential fuel with your wiring (sequential off is TBI)

At the very least, get your battery checked.
GND and 12V for the NB sensors did not change only wired the SIG wire to the trigger wires at the main ECU harness. I had a spare battery that I am using. Didn't even bother with my old one, pretty sure it's messed up.

What should my ignition settings look like? on the MSPNP pro I had Miata 99-05 as spark mode, but the MSPNP2 only has miata 99-00 . Should I use 99-00 or 4G63 which I think I used to use on my 1.6 when I had a CAS. Ignition input capture is falling edge. spark output is going high. and it is set as wasted spark for batch fire.
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Old 09-23-2016, 10:55 PM   #37
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Trackspeed Engineering is now working as the US distributor for Reverant; they may be able to help.
I spoke to them Matt. Their answer amounted to "hell, NO". They don't repair anything.

I'll have to send the unit back to Dimitris unless Peter replies early next weel. It's been 2 weeks of silence so far, so very little chance, I think Peter is busy with other pursuits at this time.
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Old 09-26-2016, 11:15 AM   #38
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GND and 12V for the NB sensors did not change only wired the SIG wire to the trigger wires at the main ECU harness. I had a spare battery that I am using. Didn't even bother with my old one, pretty sure it's messed up.

What should my ignition settings look like? on the MSPNP pro I had Miata 99-05 as spark mode, but the MSPNP2 only has miata 99-00 . Should I use 99-00 or 4G63 which I think I used to use on my 1.6 when I had a CAS. Ignition input capture is falling edge. spark output is going high. and it is set as wasted spark for batch fire.
Minor typo in the INI file - I think the very latest firmware fixed it, but you'll use "Miata 99-00" here.

Your ECU came back and is on our solder tech's desk now.
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Old 09-26-2016, 02:29 PM   #39
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Minor typo in the INI file - I think the very latest firmware fixed it, but you'll use "Miata 99-00" here.

Your ECU came back and is on our solder tech's desk now.
That's great news Matt, thank for the update! Hoping to get it back soon to continue with my MS3 original tune.

I was able to get it to start and idle roughly on the MSPNP2 last Friday, but I didn't do much else since my MTX-L wideband also got fried and I did not want to tune blindly. I am receiving a replacement today and will try to get a good idle. I'm still trying to make it to MRLS this weekend.
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