Ok so I have it wired up right.

I have the crank and cam sensor signals in. OCV in and 12v out, and power and ground.

Now I cant get the car to start. I have it the vvt tuner in NB pass thru trigger out put. My current settings for idle are pwm warmup. I've also tried putting it in closed loop always on with no luck.

Any idea's? Thanks...

Ok here's exactly how I have it wired. Ben said it was ok but I just found a thread where brain walked through it and I might have done it wrong?

I have it as follows.
This is what I'm not sure I did right after reading EO2K's thread
Pins 1, 2, 9, 10. Open because I'm not inputting it to the ecu, nor am I even sure which wires I would need to splice into to do so.

Pin 3 Signal in from camshaft sensor

Pin 4 Signal in from crankshaft sensor

Pins 5, 6, 11, 12, 13. Open because the car is a 2001 so the sensor are already powered and grounded

Pin 7 12V input on durning cranking and when the engine is running. I took this from what used to power the OCV with the stock ecu, via 5amp fuse.

Pin 14 Ground also taken from the crankshaft sensor.

Pins 8, 15. Wired into the OCV.

I'm at my wits end. I wired it as brain and rev suggested in this thread (https://www.miataturbo.net/megasquir...nms-ecu-69111/).

It will not start. I tried changing my idle settings, that did nothing.
Not sure where to go from here. Any help would be appreciated.

what does the composite log look like during cranking?

Sorry for my ignorance but what do you mean by this? Like a log from megasquirt or from the vvt tuner software?

TS, diagnostics tab, capture log to file, start, crank for like 20 sec, stop.

post the csv file and a screen shot.

remove VVT tuner and do the same.

Thank you will do.

Ok it wont take a datalog with the vvt attached. I give it a file name, hit save, hit start, crank, stop then nothing. Also my computer is old and not taking screenshots it looked like a bunch of vertical lines without/vvt and with it was nothing

Also if I plug the unit in the with car running it immediately shuts off

no vvt.csv looks good and normal, really need to see it with the VVTuner plugged in. Why can't it log with it attached, the MS has no idea, unless you've introduced a ground fault and are shorting out the system and the MS is not powering up.

Ill change my power and ground again tonight and see if that helps. For clarity though should my idle settings mess up where or not it will work right? Because I know its a closed loop vvt controller I wasn't sure if I needed a closed loop idle control.

no.

but the VVTuner shares or sends the ckp/cmp signals, so that could easily prevent the MS to work if it cant figure out the crank and cam positions any longer.

so that's why i want to see what the composite log looks like with the VVTuner attached, to see if the MS is getting the correct singals, to be able to even sync.

Still no luck. I've come to the conclusion that I've fried something on vvt tuner itself. Not sure what to do as I don't think DIY is going to replace it again...

Ok so I've been looking at the circuit board its self with a buddy. He noticed that this jumper labeled "BOOT" was not on both pins as shown in these pictures. Should I try it with the jumper on both pins?

As it was found
https://www.miataturbo.net/attachmen...ine=1366133346
IMAG0571 by Gorillazfan, on Flickr

Should it be like this?
https://www.miataturbo.net/attachmen...ine=1366133346
IMAG0570 by Gorillazfan, on Flickr

No, don't put the boot jumper on.

Ok. Well I found a thread on mnet that the guy had to change something in the megasquirt to get it to start. I'm going to check voltage out of pins one and two later. Also we were thinking it could be that big centiped looking thing

rofl.

yes, he had to change a pull up because of sharing the sensors.

this is why i want to see your crank and cam signals with the VVTuner attached.

It gives literally nothing. It shows nothing when cranking and won't save. So I figure I f'd up the board somehow. Everything looks ok and that caterpillar thing is like 0.80$ so I can afford to replace it

is this a DIYPNP?

No its an ms2 built by reverant

Edit: maybe? Idk. I didn't think they made a diypnp for 01+?

it's gotta be how you wired it.

Are you just tapped into the CMP/CKP or are you going into the VVTuner then back to the MS?

can you take pics of the harness and where you took your signals from?

this is an 01 with factory VVT?



yes, they have a diypnp for 01-05 now.