Tactrix EcuFlash Info for BRZ 86 FRS Rom flash update and logging

[nikitopo]

Originally Posted by steve99

Yes quite possible, do you know what mods the euro 2017 version has did it get new header and the red intake or just header, maybe cats more efficient as well.

We got the full package anf the 5 kw increase and the new logic rom,like usa manuals but for some reason europe got cut down version but i dont knpw what specs

Only the header. I am aware that we could not get the complete package, because of noise regulations.

[steve99]

Originally Posted by Tor

All the same. Something doesn't add up.

Changes to A01G:
- Load Compensation MP (table is bigger and has different values at low MP)
- CL fueling Target B minor change
- OL/CL Delay minor changes
- Some changes to cranking
- All base timing tables up to 5 deg less timing advance
- Knock correction Max Advance minor adjustment, but doesn't compensate for above.
- Transient Ignition Retard different values and new table size
- Max CFP delta for Transient Ignition Retard (what is that?), other values
- Ignition timing post start, more retard
- AFR Sensor Atmospheric pressure comp, different values
- Desired Overrun Mass airflow A+B different values (maybe the same as A02G, I didn't check)
- Error codes for rear 02 sensor

17 tables not defined in the new ROM. However, none that would explain the lack of ignition advance.

One table has an error in the definition:

I think you probably using kodename47 or waynos A01G defs they had extra tables defined a a few fixes over the standard romraider defs, from memory i think that errot was in the romraider defs and also one in the cranking tables.

Yes agree none of those tavle differences are going to produce power looks like mayve economy and emissions changes mostly.

I think nikitopo might be onto it though if the euro 2017 got the updated header might be more efficient , the old stock tune was quite agressive timing wise and knocked like crazy on out rubbish fuel here.

[Tor]

Originally Posted by nikitopo

The revised header is better. Maybe they managed to get the same output with a more conservative tune?

The Euro car doesn't get the new header either as far as I know.

Plus it doesn't make sense. If the new header is less restrictive, it would make sense to run more timing or the same as before. No sense in making it more conservative after the car ran successfully for 5 years. Unless they released it for 95 octane. I know someone who just took delivery of a MY17 BRZ, I'll ask him.

He had an Ecutek tuned GT86 before so I'll also ask him if it feels down on power - though I guess the new final drive makes it difficult to compare.

Did the tune come directly off a Euro car?

[steve99]

Originally Posted by Tor

The Euro car doesn't get the new header either as far as I know.

Plus it doesn't make sense. If the new header is less restrictive, it would make sense to run more timing or the same as before. No sense in making it more conservative after the car ran successfully for 5 years. Unless they released it for 95 octane. I know someone who just took delivery of a MY17 BRZ, I'll ask him.

He had an Ecutek tuned GT86 before so I'll also ask him if it feels down on power - though I guess the new final drive makes it difficult to compare.

Did the tune come directly off a Euro car?

Came from here found it couple of days ago.

http://www.romraider.com/forum/viewt...p?f=34&t=13808


If you know someone with tactrix, see if he will let you read out the rom to be sure

Ill updare my ecutek roms tomorrow and see if ecutek has it

[nikitopo]

Originally Posted by Tor

The Euro car doesn't get the new header either as far as I know.

You are correct the new header is not included:

[elBarto]

Originally Posted by steve99

We got the full package anf the 5 kw increase and the new logic rom,like usa manuals but for some reason europe got cut down version but i dont knpw what specs

It's because the car with all the new stuff will produce 1 gram of Co more then the old one, that's why we (EU) got a 2013 with a 2017 bodykit.
It puts the car in a different class of pollution and the car will cost too much for anybody to buy it.
I think we got the tweaked suspension, but all the fun stuff like the header, intake and Final drive is still like the old 2013-2016 version.
They also changed the tune like @Tor mentioned to have less power it seems.

edit: EU does have the 4.3 final drive. Yay

[Kodename47]

More PI % running, so less timing would make sense.

[Kodename47]

Originally Posted by Kodename47

More PI % running, so less timing would make sense.

K00G still runs earlier PI Ratios..... so scratch that idea.

[Tor]

Originally Posted by steve99

If you know someone with tactrix, see if he will let you read out the rom to be sure

I know someone that has a MY17 BRZ. I could ask if I could do a read of his car. I usually see him every few months.

- Can I do a read and save without suitable EcuFlash defs?
- I read in some thread that during a read there is also a short write - or was that something specific of Ecutek? Don't want to brick someone else's ECU and if he agrees to let me do a read I want to be sure if I tell him it's 100% safe.

[steve99]

Originally Posted by Tor

I know someone that has a MY17 BRZ. I could ask if I could do a read of his car. I usually see him every few months.

- Can I do a read and save without suitable EcuFlash defs?
- I read in some thread that during a read there is also a short write - or was that something specific of Ecutek? Don't want to brick someone else's ECU and if he agrees to let me do a read I want to be sure if I tell him it's 100% safe.

With tactrix just do a READ of ecu. After read is completed ecuflash will probably throw up a window saying unknown rom type.

Just save rom as srf or as a bin does not rearly matter as you can convert.

Tactrix wont let you write unless you make up a dummy def file for writing so no chance of harming ecu.

If you use save as function and save as a BIN file (it will thow another warning about lost data dont worry just click yes to save.

Then you will be able to read that bin file with romraider if its a K00G rom

If hour friend wants to write/tune his car i can convert the romraider def to a ecuflash def if you want

[Tor]

Originally Posted by steve99

With tactrix just do a READ of ecu. After read is completed ecuflash will probably throw up a window saying unknown rom type.

Just save rom as srf or as a bin does not rearly matter as you can convert.

Tactrix wont let you write unless you make up a dummy def file for writing so no chance of harming ecu.

If you use save as function and save as a BIN file (it will thow another warning about lost data dont worry just click yes to save.

Then you will be able to read that bin file with romraider if its a K00G rom

If hour friend wants to write/tune his car i can convert the romraider def to a ecuflash def if you want

Thanks a lot.

It leads to another question that I'm curious about. When I started out tuning, I was adviced never to modify and reflash my stock rom. Not that I ever wanted to do that, but were there a specific reason for that advice?

E.g. if I already had A01G on my car, would there be a difference between an A01G pulled directly off a car and e.g. an OFT A01G in the areas not defined?

[steve99]

Originally Posted by Tor

Thanks a lot.

It leads to another question that I'm curious about. When I started out tuning, I was adviced never to modify and reflash my stock rom. Not that I ever wanted to do that, but were there a specific reason for that advice?

E.g. if I already had A01G on my car, would there be a difference between an A01G pulled directly off a car and e.g. an OFT A01G in the areas not defined?

Opensource systems like oft and tactrix only modify the code area between 8000 and 13fff hex. The section between 0000-7fff is just padding and not written. Some systems pad this differently eith ff or 00 characters.

Their is no vin or other unique info in the section written so an A01G rom is same whether it came off a subaru or toyota, so no real reason to never edit your stock rom as long as you have an original somewhere. Or someone elses original.

Ecuflash srf format stores some vin and other data but this isnt written durjng flash, its just for the tactric guys to aid rom identification and dissassembly.

[Tor]

Thanks for the info. So that what is happening when saving as a .bin.

[steve99]

Originally Posted by Tor

Thanks for the info. So that what is happening when saving as a .bin.

Yes that why you get the warning that its going to dump some info, but its not needed for what we are doing