Official OpenFlash Tablet FA20 Tuning Tech Discussion Thread

[904FRSlow]

Originally Posted by ChuckButta

So i am new to this whole tuning talk and i have been reading this thread and many others on the forums. the more i read the more questions i come up with.. So i was wondering if someone could tell me which file i should use to flash when i actually purchase the OFT.
I have a 2015 FRS RS1, only mods will be GrimSpeed Cold air, Open Flash Header, running 93 oct fuel.
I understand that each car is different etc etc, but my question is which file should be loading on my first go round ?
sorry for the newb question, but i am just learning about all this and there is soooo much info it can be tuff to make sense of it all.
Thanks in advance!

Go stage 2 UEL 93 octane because you have the OFH

[JB86'd]

Originally Posted by eddieflyinv

weird experience for me just now..


BTW the flash file when viewed on the OFT when selecting which one i wanted to upload, had an * at the very end of the selection box.. not sure what that was about, it was the correct file for my ecu 700C, but figured id share that as well.

The * has been present for me as well, next to the tune name on the OFT when I go to flash. It seems to be only next to the tune that I've recently loaded, and the last couple times I've flashed my car, it says it's unable to write the tune file, then I try again and the * is gone, and it works. I always make sure my key is all the way on and doors closed etc., I'd like to know what that's all about too.

[steve99]

Originally Posted by JB86'd

The * has been present for me as well, next to the tune name on the OFT when I go to flash. It seems to be only next to the tune that I've recently loaded, and the last couple times I've flashed my car, it says it's unable to write the tune file, then I try again and the * is gone, and it works. I always make sure my key is all the way on and doors closed etc., I'd like to know what that's all about too.

the * indicates the slot number in the oft of the last tune flashed. Unfortunatly if you write a new tune to that slot with OFM the oft leaves the * against the new tune name in same slot as it just remembers the slot number of last flash not the actual tune that in your car.

[eSOLOR]

I tuned my car with the stage 1 91 octane map and on cold start it revs at 1600 rpm but when it settles down, it goes to 1100 rpm. Is that normal? I know it's supposed to be at 750 rpm so I waited a few minutes longer and it slowly went down to 800 rpm before I started driving it. Once driving, it was at 750 rpm next time I stopped. Maybe it could be that the ecu is still learning?

[s2d4]

Originally Posted by eSOLOR

I tuned my car with the stage 1 91 octane map and on cold start it revs at 1600 rpm but when it settles down, it goes to 1100 rpm. Is that normal? I know it's supposed to be at 750 rpm so I waited a few minutes longer and it slowly went down to 800 rpm before I started driving it. Once driving, it was at 750 rpm next time I stopped. Maybe it could be that the ecu is still learning?

Temperature.

[eSOLOR]

Originally Posted by s2d4

Temperature.

What about temperature?

[steve99]

Originally Posted by eSOLOR

I tuned my car with the stage 1 91 octane map and on cold start it revs at 1600 rpm but when it settles down, it goes to 1100 rpm. Is that normal? I know it's supposed to be at 750 rpm so I waited a few minutes longer and it slowly went down to 800 rpm before I started driving it. Once driving, it was at 750 rpm next time I stopped. Maybe it could be that the ecu is still learning?

Yes that normal high rev cold start.

if cold will idle at 1700 for about a minute or so before dropping to 1100 then eventually when warm about 750.

happens on stock tune to , can be reduced see tune tweaks link below

[ray7792]

I'm looking to disable the rear o2 sensor instead of going through the trouble of taking it out and removing a spacer. From what I've gathered this can be done by zeroing out A/F learning #3 limits in romraider. However, only A/F learning #1, the primary O2, is defined atm. Is there any other way to disabling the rear o2 sensor or somehow defining A/F learning #3?

Thanks!

[ray7792]

Alright, so it seems that A/F learning #3 limits have been defined thanks to @Td-d.

Code is from Td-d's 32bitbase.xml:

<table name="AF 3 Correction Limits" category="ALPHA AF 3 (Rear O2 Sensor)" type="2D" level="1" scaling="A/FLearning#1Limits(%)">
<description>These limits determine the maximum AF #3 Correction (Rear O2 Sensor Feedback) applied during closed loop fueling. By setting them to zero you can disable the effect of the rear O2 sensor on closed loop fueling.</description>
<table name="X" type="Static X Axis" elements="2">
<data>High</data>
<data>Low</data>
</table>
</table>

Does anyone know the address of AF 3 limits for ZA1JA00D? Or how do I go about getting it myself?

If I do have the address is it just as easy as adding:
<table name="AF 3 Correction Limits" address="XXXXXX" />
Then it'll pull the rest of the code from the 32BITBASE file?

I could be completely wrong about all this, sorry.

Thanks for your time!

[Td-d]

Both the learning and correction thresholds are already defined - at least in my definitions on Github they are. A00D and A01D are identical in terms of definitions:

<table name="AF 3 Correction Limits" storageaddress="63010" />
<table name="AF 3 Learning Limits" storageaddress="6381C" />

[steve99]

Originally Posted by ray7792

I'm looking to disable the rear o2 sensor instead of going through the trouble of taking it out and removing a spacer. From what I've gathered this can be done by zeroing out A/F learning #3 limits in romraider. However, only A/F learning #1, the primary O2, is defined atm. Is there any other way to disabling the rear o2 sensor or somehow defining A/F learning #3?

Thanks!

just disable P0420 code , rear o2 sensor is still used for cruise control i think, that code should disabled in oft stage2 tunes anyway

[AL008]

Just had a dyno run today, with hot temps here is my data log for today, seems to have some FLKC, not too sure how to interpret though...

http://datazap.me/u/toy-sooby/dyno-r...og=0&data=1-10

[ray7792]

Originally Posted by Td-d

Both the learning and correction thresholds are already defined - at least in my definitions on Github they are. A00D and A01D are identical in terms of definitions:

<table name="AF 3 Correction Limits" storageaddress="63010" />
<table name="AF 3 Learning Limits" storageaddress="6381C" />

Ah you're correct, I looked in the Alpha branch and found them! Thank you so much!

On another note just to make sure, my Rom is originally A00D, can I use your RR_B01D definition since the addressees are identical to OFT's A00D def? Or should I use RR_A01D, the storageaddress is different from A00D's however.

Even though my OFT's CALID is A00D atm, B01D is the updated ver. of A00D right? So, I shouldn't have any issues using the OFT B01D Bins and your B01D definitions then using OFT to write that to my ECU?

Originally Posted by steve99

just disable P0420 code , rear o2 sensor is still used for cruise control i think, that code should disabled in oft stage2 tunes anyway

You're right P0420 is disabled, I also disabled P0296 (lean rear 02) since it has been bothering me. In another thread, I'm almost positive that I do not have a leak so you suggested that the code and my recently messed up fuel trims could be due to the spacer I left in the rear o2.
Following your advice, I'm thinking if I "disable" the rear O2 activity my trims will go back to being normal. Yeah, I also read somewhere that its used for cruise control, i'm willing to sacrifice that though lol.

If anything, if the rear o2 does turn out to be the root of my troubles, I'll fix it mechanically. I didn't want to pull out the header just to find out that the rear O2 sensor is fine and my issue is elsewhere =/

[Td-d]

Originally Posted by ray7792

On another note just to make sure, my Rom is originally A00D, can I use your RR_B01D definition since the addressees are identical to OFT's A00D def? Or should I use RR_A01D, the storageaddress is different from A00D's however.

If you're using the V2 maps, yes, it's based off B01D. Use those addresses, and do a sanity check - should show -50 and 50.