There's two ways of tuning for E85 built into Tunerstuidos, ones a little more basic than the other, which is a simple fuel multiplier and additional advance.



So here you're at 100% (zero additional fuel) at 0% ethanol, and 163% (63% additional fuel) at 100% ethanol. You're also adding 3.5 degrees advance for the same range.

Then you've got the dual tables menu, where you're using different fuel, AFR target, warmup enrichment, afterstart settings, cranking pulse, and accel enrichment tables, all based on the curve pictured to the right, which is 100% "table 1" at E10, and 100% "table 2" at E85. (For fuel and ignition, it's table 3, don't ask me why).



Now lets look at your two fuel tables. I've highlighted the same idle area in both tables. First off, see how on one table you've got 4 rows at 40kpa or lower, but on the other you've only got 2? That's why table break points are important, you've got more resolution at idle on pump than on E. But more importantly, on ethanol you're running ~42-48 VE at 800-1100rpm, and on pump gas you're running 65. That's ~30% LESS fuel with ethanol, which tells me your multiplier from above is too much, at least at idle.



I would suggest either use one or the other. Since he's going to get this professionally tuned at some point, disable the secondary tables and tweak the fuel multiplier until it runs well. I'd suspect you want around 30-40% multiplier with E85.

But if you want to be more precise, zero out the fuel multiplier and the ignition adder, copy/paste your fuel and ignition 1/3 tables so they're exactly the same, ADD 3.5 to your ignition table 3, and MULTIPLY your fuel table 3 by 40%, tune from there.

 

I fixed the flex settings and am running just a second set of tables now. I was having a problem when it was dead cold starting and missing on two cylinders..... So I ended up putting in R8 coils and adding the extra wires for sequential. Man, this car has been a handful!

Curly, thanks for the help on that! I ordered another MS3 to put on my SR20 car or maybe my dune buggy so I can keep working with tuner studio after I return this car. I really like the interface and the hardware price really can't be beat.

I'll post the current tune after I do a bit more E70 tuning and switch back to 91 clear gas and clean it up also.

 

After getting everything running properly on new coil packs we switched back to clear gas and autotuned, and then switched back to ethanol and autotuned. It ran real good and I finally got it out of my shop! I ordered a MS3 Gold Lite and Rasberry Pi 5 for myself so I can keep learning more about the tuning side, unfortunately I don't have a Miata myself so it will probably start out on my SR20 car and eventually move up to my foxbody turbo car if I like it.

MS3 Pro Mini (Firmware Version 1.6.1)
Stock VVT engine (VVT intake butterfly gutted / egr blocked - Factory exhaust manifold with glasspack muffler)
Audi R8 coils
EV14 GT500 MU52 Injectors @ Factory Ford 39.15 fuel pressure
1:1 fuel return regulator set @ 39-40 psi (vac disconnected when set)
AEM X300 canbus wideband
Continental flex fuel sensor
1994 1.8l Coolant ecu sensor
GM IAT sensor