Official OpenFlash Tablet FA20 Tuning Tech Discussion Thread

[endrswrd]

Got ya, I actually noticed that when shifting the revs drop much much faster on the A01C rom that was from Shiv vs my stock A01C. Running more (max?) ignition retard during the transition would explain it. Other then that and some tweaks I made to the low end the OFT / Shiv / Vishnu maps are good quality work. Thumbs up to you Shiv for not only doing good work but sharing it with the community.

Originally Posted by Td-d

Yeah... let's not start this debate up shall we - because I'll be the first one to point to some history related to Ecuedit.

I sense drama! I was just guessing about my comment above so take it with a grain of salt. I knew they had to have gotten support somewhere because of how close the release of the OFT came to when ECUFlash support opened up for the brz. But that was just an educated guess.

[Stevo22]

Originally Posted by King Tut

Developed from scratch eh. I can think of a few people that would strongly disagree with that statement.

Originally Posted by endrswrd

lol If I am not mistaken they got help from the RR guys?

Bringing this to light is why I came over here, as I am actually running that map. Because its the transient table, its only used during a shift no? It may have been intentional but just wanted to make sure...

Originally Posted by jvincent

To be fair to the OFT guys, I don't think they have made any claims about developing from scratch.

It's a new platform, and they are charging what they are charging.

To compare it to the BMW solution, which has been around longer, may use different/cheaper parts, etc. is not really of much benefit.

Originally Posted by Td-d

Yeah... let's not start this debate up shall we - because I'll be the first one to point to some history related to Ecuedit.

Ok. Since I started all this crap with bad information, I will put it to end with good information. I misremembered this quote.

Originally Posted by Rombinhood@OpenFlash

Price should be around $450-500. Not sure how competitive that is but it's in line with the amount of extra work needed to adapt our BMW application to work with the twins. And to be clear, you do not need any additional hardware. This device stores the flash files, flashes the ECU, does diagnostics, datalogs, and gives you full access to the unencrypted ROM file.

So there you have it. They did not say scratch. I did and in doing so accidently put words in their mouth.

[Td-d]

All good, no drama, I'm way too old and cranky in any case

Don't want to clutter up Vish's thread either. Interesting how well developed the retard ignition is compared to older roms that I've seen (on the AT subaru foresters, for example it's a small 2D table). Obviously key to driveability.

[s2d4]

Originally Posted by King Tut

Developed from scratch eh. I can think of a few people that would strongly disagree with that statement.

Haha, you nearly started a shitstorm. Lucky the guys that are really in the know are all standup guys.
@shiv@vishnu, let's say I've got OFT to read my original ROM, then I decided to go with BRZedit, can I then go back to OFT captured original ROM? @jamesm and @Sojhinn touched on this on another thread but their case was/would be starting with BRZedit first.

[hmong337]

I know this is minor but will you guys be adding a way to disable the tpms warning light?

[sonnydelight]

Originally Posted by hmong337

I know this is minor but will you guys be adding a way to disable the tpms warning light?

I believe this has already been covered, and the answer is no - at least not at this time.

In the future, I would like to see features like this along with an intelligent auto blip downshift, on the fly map switching and launch control adjustability using the tablet.

In the meantime, my OFT should be here Thursday. I'll be going with shiv's stg 1 tune. Can't wait!


Sent from my iPhone using Tapatalk

[jamesm]

Originally Posted by s2d4

Haha, you nearly started a shitstorm. Lucky the guys that are really in the know are all standup guys.
@shiv@vishnu, let's say I've got OFT to read my original ROM, then I decided to go with BRZedit, can I then go back to OFT captured original ROM? @jamesm and @Sojhinn touched on this on another thread but their case was/would be starting with BRZedit first.

if you have a brzedit map on your car, you can't pull it with anything else. now, if you have brzedit laying around to switch the stock map back on as necessary you could do that.

[s2d4]

Originally Posted by jamesm

if you have a brzedit map on your car, you can't pull it with anything else. now, if you have brzedit laying around to switch the stock map back on as necessary you could do that.

Yeah, that's why I said you guys were touching on this but with a different starting point.

So let me rephrase my original question.
If I did this, in chronological order:
1. Bought OFT and pulled the stock rom off the car, tried the OTS maps.
2. Did some mods and decided to get it dyno tuned but the tuner wants to use BRZedit.
3. Don't like the tune or the tuner sucked and want to go back to OFT OTS maps.

Is it possible to overwrite the BRZedit tune with the stock ROM stored on the OFT since it is byte for byte?

[jamesm]

Originally Posted by s2d4

Yeah, that's why I said you guys were touching on this but with a different starting point.

So let me rephrase my original question.
If I did this, in chronological order:
1. Bought OFT and pulled the stock rom off the car, tried the OTS maps.
2. Did some mods and decided to get it dyno tuned but the tuner wants to use BRZedit.
3. Don't like the tune or the tuner sucked and want to go back to OFT OTS maps.

Is it possible to overwrite the BRZedit tune with the stock ROM stored on the OFT since it is byte for byte?

no, because brzedit appears to change the seed-key algorithm (stored in the rom), so as long as a brzedit rom is on there, only brzedit can push/pull roms, regardless of where said rom came from originally. only the brzedit stock rom (ZA1JA***_orig.hex i believe it's called) can then be loaded by brzedit which restores the normal functionality and lets other software communicate.

you would need to have the tuner (or someone with brzedit) flash the brzedit stock rom back on first. so it's possible, but a pita.

[Sojhinn]

Originally Posted by jamesm

no, because brzedit appears to change the seed-key algorithm (stored in the rom), so as long as a brzedit rom is on there, only brzedit can push/pull roms, regardless of where said rom came from originally. only the brzedit stock rom (ZA1JA***_orig.hex i believe it's called) can then be loaded by brzedit which restores the normal functionality and lets other software communicate.

you would need to have the tuner (or someone with brzedit) flash the brzedit stock rom back on first. so it's possible, but a pita.

This is the reason I have to hold off on that tune. From my understanding: if the brzedit tune is open and not encrypted you can actually swap fairly easily.

[jamesm]

Originally Posted by Sojhinn

This is the reason I have to hold off on that tune. From my understanding: if the brzedit tune is open and not encrypted you can actually swap fairly easily.

i was under this impression as well, though it appears to definitely not be true. the tuner has the option of saving the rom file in a format that can be opened in brzedit personal, but it's not useable in any other software. in any case you can't open communication with the ecu if a brzedit rom is on there in the first place. not sure if the tuner has the option of turning off the read protection, but i couldn't find it if it's there.

[Sojhinn]

Originally Posted by jamesm

i was under this impression as well, though it appears to definitely not be true. the tuner has the option of saving the rom file in a format that can be opened in brzedit personal, but it's not useable in any other software. in any case you can't open communication with the ecu if a brzedit rom is on there in the first place. not sure if the tuner has the option of turning off the read protection, but i couldn't find it if it's there.

Shiv said the new software for brz edit allows direct access with the oft. They just need to save it in the right format.

[Shiv@Openflash]

Originally Posted by Sojhinn

Shiv said the new software for brz edit allows direct access with the oft. They just need to save it in the right format.

This is only based on what I heard epifan say. Someone with the newest version of brzedit would have to confirm. Fwiw, one of our customers has an older version of brzedit pro and he has been able to write the ecu with brzedit and then read it with the OFT. He has also been able to overwrite our OTS rom over his tuned-by-brzedit rom. Of course, things may change with each update to its impossible to know of this still holds true.

[Sojhinn]

Originally Posted by shiv@vishnu

This is only based on what I heard epifan say. Someone with the newest version of brzedit would have to confirm. Fwiw, one of our customers has an older version of brzedit pro and he has been able to write the ecu with brzedit and then read it with the OFT. Of course, things may change with each update to its impossible to know of this still holds true.

Thanks for the heads up. Also Shiv I sent you a private message. Do you mind taking a look?