what's your O2 in? voltage? you're hitting 0v? what's that like 7.3:1 AFR?

that with your small gap, you're blowing out.


I feel like you need to calibrate your TPS too.

Il try to post a better log tonight. I recalibrated tps, got the 02 reading again, notice it only goes to 21 or 7.4, and my map goes to 200+ in all my logs when I've looked

so are you or are you not at 7.3:1 AFR (0.02v) in boost?

Not, afr are roughly 11:1 in boost

Hrmm.. wtf is up with my viewer.. this is what I see: Max: 93

https://www.miataturbo.net/attachmen...ine=1378421727

Two new logs.

That log you are looking at is correct, these two are hopefully more telling of what's going on.

I'm literally down to: fuel injectors (clogged), and grounds. If someone has another idea, let me know. I honestly don't know where to go from here.

I had the timing locked at 10* for the first log and that time it pulled better until ~1bar.

I decided to only post one map.
First strange issue, when we first tuned the car, the duty cycle of the injectors maxes out at maybe 75% DC. During this log it hits 99% which isn't correct. I checked the injector screens, but they looked clean. I cleaned them more anyways.


Notice when scrolling through the time line, it says record 500 of 887 and if you advance "frame" by frame, it counts up. At record 534 it's fine and at record 536 it's fine. Where record 535 should be is says MARK 003 RESET.

So, why is my ECU doing that? I cleaned up my current grounds so hopefully they look/work better.

After that I'm out of ideas.

I dont have MLV here, but that above screen shot. That spike in PW is not cool, do you have trigger happy accel enrichments?

here's a picture of it. There is a red line straight through everything (where the blue line is currently) where the record says RESET

have you tried to open the gap up to at least .035"

also, why so retarded ignition timing?

and isnt' 11:1 like super rich considering e85?

Tuning issues aside, it ran well like this for a number of days and then all of a sudden stopped working.

That's a little rich, we tuned it to be around 11.5-12:1
Plugs are still closed up (should I try iridiums?)
My friend has been tuning SRs forever so this is probably based on his experience with those, which I know aren't Miata motors. How much more can I run safely? Trying not to max my cylinder pressures because of how fragile those rods are said to be

Just a thought . . .:

Do any of your outputs go to relay coils? I've had these types of resets before and they were caused by flyback voltage. If that's the culprit, there are several ways to address the problem.

We added 3 more grounds to 7-19. We resoldered any connections on the board that might have been questionable, I put in .032" plugs (brand new) and still got resets. I took one run with .024" gaps after the soldering and I had no resets just break up. So I thought maybe te gap suggestion was right, but it reset again with bigger gap. We are thinking mate the coil drivers are overheating and causing a shut down? We just reduced the dwell but haven't had time to test yet. We are thinking maybe these drivers are weak/dying so if this doesn't fix it I was planning on replacing those and going to a 4 bar map sensor just for the extra room since I am nearly maxing this sensor out.

Reducing dwell didn't help

I think you should listen to braineack and go into the Acceleration Wizard and set map threshold to 500 and/or the tps threshold to 4.9v. See if that helps. It has with me multiple times when a TPS wire was grounding out occasionally.

I've tried everything anyone has suggested to this point. I seriously have no clue anymore. This isn't a check your plug gap kind of problem though. For some reason the ecu resets and the log shows a reset condition several times during the course of every pull at 1.4 bar. It's only resetting at full boost not rpm related. The log and data show this

Have you tried increasing your over-boost setting?

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Tuning Your MegaSquirt-II™ (or MicroSquirt®)

Are you guys fucking joking?

I think I might have a similar problem so hope that some ideas come forward from this thread.

Car runs perfectly 99% except at high load/boost in 4th, 5th and 6th when it momentarily hesitates (feels just like the rev limiter sometimes, others a lot softer version), the AFR spikes to 16-18 for a split second then car keeps going.

I think the AFR spike is a side effect not the cause.

I also get random resets in my logs, which I believe occur at he same time...

Does this sound similar...?