OpenFlash Tablet E85 (and gasoline) Maps now available

[Malt]

Originally Posted by Td-d

Mate, it's seriously no bother - we all started off learning somewhere.

Follow mad_sb's directions - multiply those cells where you are having problems (i.e. 32, 50 and 68 in your case I would imagine?) by a factor - try those suggested by mad_sb (i.e. 1.3 for the lower and lower for the 68 cell - 1.2). You have to be careful not to overfuel it, because that also creates problems cranking. Do it on all 6 tables (including the 2D table).

Once we get you sorted here, hopefully you won't have warm restart issues, which can present with E85 as well - but there's a fix for that too

AHHHHH, I'm starting to see whats going on here. The tables I had intially changed were only the 2D tables like you mentioned, but thats only like 1 table out of 6! Those 2d tables don't reference Cranking state numbers (which are what exactly?)

He mentions something in that post about resetting the Cranking RPM table back to 0.00. Is that the Cranking Fuel IPW Compensation A (RPM) table I'm seeing in the Fueling -Cranking menu? Should I still do that as well? I'm assuming thats a table to enrichen the fuel on startup by a set percentage based on Temperature and Engine speed?

I'll go start multiplying all these fields like he suggested and hopefully it will work. Thanks again for your help.

[Td-d]

Adjusting the RPM table seems to have helped as well, so I would follow his advice.

Haven't dug out what the different state numbers are, but likely different conditions under which cranking is performed - e.g. high electrical load, AC on.

[jamesm]

Originally Posted by jsimon7777

You gonna post your tunes for us to see?

they're brzedit. once logging is available on ecuflash and i can make the switch back i'll convert the maps over and post them. drm sucks

[jamesm]

my car took a few extra cranks to start until i adjusted the cranking ipw tables (only the 2d ones available in brzedit), and now it seems to be about the same as with pump gas. i just multiplied all the values by 1.27. i'll look into it again if it gives me trouble when the colder mornings come (it's 82 degrees here today, maybe 50's in the mornings).

[Malt]

Originally Posted by Td-d

Those logs look pretty decent - you are carrying a small amount of AF learning into open look though (-1.56) which is leaning you out a bit. Basically, the learning from AF learning range D is carried across into open loop - so it's best to have it at zero.

There's a trick to deal with that quite easily - set the af learning range C (the last one) to 60. It will disable learning carrying across into open loop.

This table is called A/F Learning #1 Airflow Ranges which is under Fueling - AF Correction /Learning? So you are saying to change the field called Max Range C/Min Range D from 20 to 60?

[Rombinhood@OpenFlash]

Originally Posted by Td-d

Don't stress about those LTFTs, as long as you're between -5% to 5% (some are comfortable with -8% to 8%) you're good.

Maybe try using the direct source of the XMLs - i.e. here: https://raw.github.com/TD-D/SubaruDe...R_ZA1JA01C.xml

+1

Your tune looks spot-on in terms of fuel trims, AFR, ign advance, etc,. So at this point, I would limit your mapping changes to the starting enrichments only (as suggested by Td-d). Shiv may have some suggestions too once we comes back to the forum this weekend. I don't think he would recommend disabling carrying LTFP over to load as that is one of the functions that corrects for changes in E% that you are bound to see from time to time and from gas station to gas station.

[Td-d]

Originally Posted by Malt

This table is called A/F Learning #1 Airflow Ranges which is under Fueling - AF Correction /Learning? So you are saying to change the field called Max Range C/Min Range D from 20 to 60?

Yup, exactly.


OT, but on a sad note, it's just been confirmed that our ex-president Mandela has passed away. RIP


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[jeebus]

Originally Posted by Malt

I'm not concerned with the -1.56 LTFT, I'm concerned that it went from 0 to 3.8 to 3.2 to -1.56 all in the same tank. Seems a bit weird to me, but what do I know.

My main issue is the cranking when its "cold". I'd prefer it to crank on the first try instead of taking 20+ attempts like the maps that shiv provided at the start of this tank. Maybe I got a tank full of E95 like a couple people in cali had. A couple other members helped out with suggesting to modify the injector pulse width and that helped some, but even still it took 5 cranking attempts to get the car started in 68 degree weather. 68 degrees isn't cold in my book and if that's what I have to look forward to every single day then that's just not something I'm willing to deal with. I had hoped that there was some fix to the issue instead of just going back to 93, which is why I've resorted to asking here since Shiv is banned and didn't answer my email (I'm sure he's busy).

Oh dang, yeah you shouldn't be needing to crank 5 times in 68 degree weather!

LTFT takes time to change. This tank of e85 sounds like it has less ethanol than your last tank, hence why your LTFT has moved from slightly lean to slightly rich.

[Td-d]

Originally Posted by Rombinhood@OpenFlash

+1
that is one of the functions that corrects for changes in E% that you are bound to see from time to time and from gas station to gas station.

This is true...




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[Terrapin77]

I just found out the Chevron about 2 miles from my house sells E85. I'm going to try it out later today. I just want to make sure that I'm supposed to switch to the E85 map as soon as LTFT goes way negative. And what is way negative? -10? Any help is appreciated. I'm a newb when it comes to ECU flashing?

Edit: Should I monitor LTFT with Torque or the OTF?

[Malt]

Originally Posted by Terrapin77

I just found out the Chevron about 2 miles from my house sells E85. I'm going to try it out later today. I just want to make sure that I'm supposed to switch to the E85 map as soon as LTFT goes way negative. And what is way negative? -10? Any help is appreciated. I'm a newb when it comes to ECU flashing?

Edit: Should I monitor LTFT with Torque or the OTF?

I monitored LTFT with Torque, but I've noticed there is a little latency in the display so be prepared for that. The OFT display seems almost instantaneous but its akward and I can't find a decent place to mount it to read while driving. I'll stick with Torque for day to day monitoring and use the OFT for the occasional logging.

Originally Posted by jeebus

Oh dang, yeah you shouldn't be needing to crank 5 times in 68 degree weather!

LTFT takes time to change. This tank of e85 sounds like it has less ethanol than your last tank, hence why your LTFT has moved from slightly lean to slightly rich.

So I made all the changes as suggested, went out and flashed the ECU and did a test crank. It started right up. At first I was super excited, but then I realized that the coolant temps were sitting around 100 degrees fahrenheit, so not a real test. Man that coolant stays warm forever! I guess the cold start testing will have to wait till the morning.

[Rombinhood@OpenFlash]

Originally Posted by Malt

I monitored LTFT with Torque, but I've noticed there is a little latency in the display so be prepared for that. The OFT display seems almost instantaneous but its akward and I can't find a decent place to mount it to read while driving. I'll stick with Torque for day to day monitoring and use the OFT for the occasional logging.



So I made all the changes as suggested, went out and flashed the ECU and did a test crank. It started right up. At first I was super excited, but then I realized that the coolant temps were sitting around 100 degrees fahrenheit, so not a real test. Man that coolant stays warm forever! I guess the cold start testing will have to wait till the morning.

Fantastic. Give us an update in the morning after the true cold start test

[Terrapin77]

I have to say that running E85 gives my car the pep it has been missing. I can't believe how easy it is using the OFT. Since I have zero experience interpreting a data log, will someone be so kind as to look at my data log and let me know if it's all good?
http://www.datazap.me/u/terrapin77/e...7-8-9-10-11-12

The log was taken about 10 minutes after I switched to the E85 map. The log shows a 2nd into 3rd gear pull on the highway. My car is 100% stock.

[Malt]

66 degrees this morning and it almost cranked right up. If I had given it a little tap of the gas pedal during the 2-3 seconds the idle was stumbling it probably would if been fine. It cranked just fine on the second attempt.

So we're close. The next part is to add fuel to the cranking enrichment table? Suggestions as to how much to add since I reset everything back to 0 like suggested?

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