92Yata

I had a remote tuner tune this car late last season.
It does start, idle, drive, and pull well.
I am looking for assurance that it is a safe tune.
I have no experience tuning cars and was hoping a few experienced guys would have a look.
This is a street-driven car.

Stock 1.8L swap, Kraken Top Mount, GT2560r, MS3Pro, EV14 Bosh 700cc Injectors, EBC, Sequential Injection,Toyota Cops,DW165, 3" Exhaust
I have attached the last few logs, the current tune, and a graph from Virtual Dyno that I did.

eviking

The tune looks alright, if you want the car to behave nicely you could change a few things.

First off, the VE table still needs quite a bit of tuning if you want to ever operate outside of closed loop, which it seems like is currently set to be on 100% of the time as kind of a crutch.


Your AFR Target Table is a bit aggressively lean in some places, like I think the 100kPa row should definitely be richer than 13.7 from 2000RPM onward.
I'd recommend taking a few long drives on a day with ambient temps a little below your 100% design point of 86°F, maybe 70-75° ambient, and submitting those logs to Megalogviewer VEAnalyze.
You can use some settings in VEAnalyze like Cell Change: Hard, Max Value Change: 10, Max Percent Change: 20, Min CLT: 170 and include the whole map from 500-7500 RPM and 10-250MAP.

Also, your "Overrun MAP Threshold" is a bit low at 20kPa, you might want a value like 23kPa, I see some idle/overrun oscillations in more than a few logs that must feel pretty herky-jerky when you're coming to a stop.


I'm sure there are other areas things could be improved, I don't have experience with EBC so maybe someone else will catch something I missed.

Rrrracer

- Generic injector characterization
- There is no MAT retard curve in place
- AFR targets at 100 kPa are rather lean (the 120 kPa row would be more appropriate)
- Ignition timing is pretty aggressive IMO
- VE table has been run through the auto tooner

Car is tracking AFR targets pretty well, WOT runs a bit rich on the top end. I would expect some trouble entering idle here and there using the Last Value. Overall the logs don't look too bad, but there is room for improvement in the calibration.

curly

iTrader: (25)

Not in the 11s until like 12psi either. I prefer to hit 11.9afr by 5psi, and taper down to 11.5 by 10-12. Might be a bit rich, but I also don't blow up engines with my tunes...

The rest of the table is pretty lean as others have said.

I also don't like that we all talk PSI, but MS is in kPa. As a work around, my table rows are in PSI increments in boost, usually every 2 psi. So 114, 128, 141, 155, 169, etc. I do this so when I increase boost duty and hit a new row, that means I've increased by 2 psi. Some of the original base tunes were like this, not sure if they still are. So when I see 100/120/140/160, it bugs me. I feel like I've said this a million times, but on pump gas, I like to be at 28 psi at 100kpa, and decrease 1 degree for every psi of boost, 2 if gas sucks or customer wants a more conservative tune. So by 20psi, which is where your map ends, I'd expect around 8 degrees. You're still at 10, so not a big difference, but on a stock motor, I'd tune more conservatively than that.

A lot of other small issues like others have mentioned. Keep in mind lot of this advice from us depends on your own circumstances. Can you afford to swap another stock engine in? Do you have access to 93, or only 91? Are you planning on building your engine soon? Do you hit max boost and redline often? Are you in a cold climate or hot climate? As you can imagine, the timing table and safety settings someone makes in Phoenix is (should) be a lot more conservative than a timing table made in....Ontario, for example.

All in all, I don't think you got ripped off, but theres a few tweaks you could do to make it better.

92Yata

Thanks for the feedback, it seems there is room for improvement.

92Yata

I reached out to Curly for some help tweaking the tune.
He certainly knows these miata's and the MS.
The car is running great and hopefully less chance of catastrophic failure.
I am posting the tune and my last log for viewing.
Let me know what you think.