The 2017 fuelling works different to the old cars, theirs extra tables one ecutek calls "power AFR" it doesn't seem to be identified the the opensource definitions I have seen, however shiv may have better defs. The extra tables are used as well as the normal OL fuel tables (and their is two of those as well)

How do I change what the OFT logs?

Similar to PE table in GM ecus?

second that

bump

He had said in an email that tunes would be out this week, and with this being the last business day of the week it's not looking hopeful, he hasn't responded to my emails asking for the 93 tune for the 2017 so I feel like he's either too busy or something else...

Probably bugs, delays, or just plain busy. =/ was hoping for the 2017 tunes myself

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Last he emailed me back and said that the 91 tune was aggressive (meaning there might not be a 93 tune:thumbdown:) And apparently the most recent 91 tune was the same the beta tunes(not from him but other members who compared). He wanted my datalogs but I wanted to wait until an official tune was released (guess that is delayed).


But if he ever reads this I would be willing to send datalogs back and forth so we have a REAL 93 octane tune. Otherwise your basically spending $500 to turn off cold and o2 codes.

Sorry not familiar with GM ecu logic

I think the 17 can handle more power than what is being offered here. Top end is feeling more anemic than my 93 octane tune from my 13 brz.

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That's probably because the top end is at 11.02 AFR :mad0260:

if im running 91tune with top end at 11AFR does it mean i can try 93tune to get it close to 12-13 AFR?

No, fuel quality, or octane will only affect it's ability to resist knock, it will not change the amount of fuel that the ECU is currently commanding in relation to air(AFR).

just waiting for the new tune to come out and give it a try haha

Just as I thought, commanded AFR when it's down to 11.02 is 12.12. But I don't think it's a scaling issue because the commanded AFR is 12.12 when the actual AFR varies from 11.6 down to 11.02 while the commanded stays the same. So there's something up with this tune. I'm wondering if he doesn't have the newer tables defined at all? I feel like things wouldn't be working at all in that case though.
Attachment 157020

http://www.datazap.me/u/jermmx5/afr-...36&tmax=257.73

OFT as a company is really focusing on another platform right now. This service for the 2017s is to keep support.

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Not a good excuse they still had no problem taking my $500

I didn't post to make an excuse for them. I am saying out cars aren't their priority. Far from and excuse. The 2017 has a potential not being met by old firmware and software.

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Didn't mean to come off as a Dck. We are on the same team here. So you think the device itself is incapable of a better tune? Or is there just not enough voices interested or ticked off about the attention given to the 17 tune?

No, that's exactly what a MAF scaling issue looks like.

When you are open loop the MAF value determines how much fuel is delivered in order to hit the commanded AFR. The fact that the measured AFR is lower means that the MAF scaling is off.

Are the version 3 tunes also updating the older models (13-16) as well as creating model year 17 tunes?


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Oh wow that would be amazing, then how would I go about scaling it? I just took a look and the MAF voltage was reading 0 all of my logs, is that normal?

It probably has more to do with the miata having a stronger install base.

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There's a long thread that's worth reading a couple of times that @steve99 started.

http://www.ft86club.com/forums/showt...01#post1842501

One other note, if your MAF voltage is always zero you need to update your OFT.

But the Miata sucks eggs.

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My OFT updated the first day I got it and plugged it in to my computer, all of my logs have showed 0 on the MAF voltage, is there somewhere I can go for the latest update?

My HW version is 03.35 and FW 01.45
And CD: P9029

Are you logging maf voltage? Go through the mag scaling thread and run it through the vgi mag scaler. What are your fuel trims like?

Ya I'm logging it, but in all my logs it comes up as zero. So I don't think I can run it through the scaler without that?

And they look like LTFT is almost always 2.34 during WOT pulls with no STFT

*Nevermind I was using the compare tool before and it left the offset one up the actual two tables are here:

Attachment 157054

Double posting because I found something odd. There are only 9 tables different between the Stage 1 and the Stock tune and here is one of them. Could the Stage 1 values be flipped?

Attachment 157049

If its K00c rom the logging ram address is likely incorrect you will need to contact the oft guys

AF learning limits ie LTFT are normally +/- 40%


Im not sure what defs you using but it might be a scaling/display issue as the 40% may be represented as 0.4 instead of 40%


or it might be a typo


diff between 40 and 4 is 36, hard to know without seeing roms and defs

Nothing about this 2017 support has been smooth. Looks like they find the cheapest least time consuming method to make this functional. Tunes are ok, better than stock, but not great.

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So it seems that maybe for the 2017's we may be better off just Dyno tuning with ecutek? I have a 2017 and want to get the OFH and OFT but the 2017 support seems lacking.

I haven't seen where Dyno tuning with any tuner on a 2017 is very effective.

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But no one has dynoed these new 2017 tunes. So, what comparison between these canned tunes do we have for 2017? I know my car in 2014 was faster on a stage 2 tune than my 2017. The mid range on the 2017 is much better, but the top runs out of breath past 6500 rpm. That is where the peak torque is supposed to be.

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Watch "MODIFIED BRZ dyno power numbers" on YouTube
https://youtu.be/iWcGW-wlOEg

I wanted to do a uel header and a tune. Maybe I'll just do an axleback exhaust just to gain some nice noise instead. At least until all the 2017 tunes have been figured out.

He also says its on 91 octane. We need someone to do a real 93 tune instead of using Coors Light

Catless uel and axleback sounds good, i say from experience

Thanks for the laughs