ZA1JA01C True reliability

[Circuit Motorsports]

All of my US-spec tunes now use the B01 ROMS. I strongly recommend upgrading to this latest flash release as it contains all factory updates released to date, including DI seal issue, idle drop, etc.

- Bob

[AZFA20]

Originally Posted by Circuit Motorsports

All of my US-spec tunes now use the B01 ROMS. I strongly recommend upgrading to this latest flash release as it contains all factory updates released to date, including DI seal issue, idle drop, etc.

- Bob

So I just updated to the latest Software Versions from 14639 to the new 14761 and in addition updated the ROM database. For whatever reason my ROM database does not have the B01 ROMs, just the "A"s. The feature and license information does in fact show the B01 ROMs as supported but no B01 ROM files to build from.

Am I missing something?

[1Cor10:23]

Originally Posted by Circuit Motorsports

All of my US-spec tunes now use the B01 ROMS. I strongly recommend upgrading to this latest flash release as it contains all factory updates released to date, including DI seal issue, idle drop, etc.

- Bob

Hey Bob,

Does running A01C create wear issues compared to B01C? Thanks!

[Circuit Motorsports]

Originally Posted by AZFA20

So I just updated to the latest Software Versions from 14639 to the new 14761 and in addition updated the ROM database. For whatever reason my ROM database does not have the B01 ROMs, just the "A"s. The feature and license information does in fact show the B01 ROMs as supported but no B01 ROM files to build from.

Am I missing something?

Unless EcuTek is doing something different for the professional suite which I am not aware of, you should have the B01 ROMs. Try running the update again. I've experience this where the first time I run a software update is just updates the software without ROMS, then running the update again picks up the new ROMS.

- Bob

[Circuit Motorsports]

Originally Posted by 1Cor10:23

Hey Bob,

Does running A01C create wear issues compared to B01C? Thanks!

If you are referring to the DI seal issue, A01C included the adjustments for that, so no, running A01C should be fine in that regard.

[1Cor10:23]

Originally Posted by Circuit Motorsports

If you are referring to the DI seal issue, A01C included the adjustments for that, so no, running A01C should be fine in that regard.

Yeah just wanted to make sure...I think a few popular tuning solutions are still running A01C as the base so just wanted to see if there's any potential harm being done. Thanks!

[uncivilised]

i have an april 2013 build 86, done 25000km on the clock, done 6 hard trackdays and countless mountain runs, no codes and no DI issues so far.

i have a mate with a june 2012 86 that got the DI issue on his second track day.

hope this helps

[AZFA20]

Originally Posted by Circuit Motorsports

Unless EcuTek is doing something different for the professional suite which I am not aware of, you should have the B01 ROMs. Try running the update again. I've experience this where the first time I run a software update is just updates the software without ROMS, then running the update again picks up the new ROMS.

- Bob

I had tried updating a few times with no luck. I shot @EcuTek an E-mail in regard to it just to see if perhaps the retail version and the trade version are differing at the moment with ROM accessibility. Mine is also RaceROM BRZ enabled so we shall see.

Strangely the RaceROM feature files do include the B01 RaceROM feature but obviously I cannot add it without the base B01 ROM which is missing.

[regal]

Originally Posted by AZFA20

I literally just got finished switching all my maps over to the A01C ROM..

Why didn't you just flash the newer rom instead of all the copy/pasting, just curious.

Originally Posted by 1Cor10:23

@AZFA20 what are your thoughts on people still seeing DI seal being compromised with the A01C? A few people still hold to it as being a definite failure down the road.

Sent from my SGH-I317M using Tapatalk

Well there hasn't been one reported failure on this forum with a 2013 or later build date, fairly definitive. Also these injectors are used in other Toyotas and the DS-4 DI has been around forever. All positives.

Originally Posted by raul

How often are you shifting aggressively (WOT-lift-WOT) through gears 3-4-5-6, shifting at redline?

This is what kills the injectors, some roads require you to drive in the upper power band on/off throttle. GSGMike said he could blow a DI seal driving this manner in 500 miles.

Originally Posted by jamesm

the car spends most of it's time doing WOT pulls lol.

Those aren't a problem because you aren't making quick "transient" throttle changes at high rpm.

Originally Posted by AZFA20

I cannot add it without the base B01 ROM which is missing.

So no one has shared the B01 ROM's yet? I'm still trying to get my head wrapped around why it seems so difficult to flash these cars to the latest factory calibration.

[AZFA20]

Originally Posted by regal

Why didn't you just flash the newer rom instead of all the copy/pasting, just curious.
So no one has shared the B01 ROM's yet? I'm still trying to get my head wrapped around why it seems so difficult to flash these cars to the latest factory calibration.

I am not sure what you are using in regard to tuning and there may be some confusion because there is sort of different conversations taking place. The ROMs we are referring to are base ROMs. For someone like me who is highly modified there is very little left in the tables that are stock when I am done tuning so I have to start with a base ROM and build from there which for retail consumers requires the copy and paste method from my already built ROMs. Trade versions are slightly different with the comparison software that trade clients have access to (Basically for this scenario their life is made a little easier to transfer data from one ROM to another).

So to make sense of what we are referring to is more of an EcuTek understanding. I was given a B01C stock ROM this evening so now I will do the same as I did with A00,A01,and now B01. So an example of some things that change between revisions are min and max values in certain tables. The transient retard table for instance is a perfect example between A00 and A01. We could alter the tables but we were limited with the range of tuning if that makes sense. I don't want to get too technical because I don't know how familiar you are with what I am talking about. Denso along the way increases our ability to tune or simply build a better foundation from which to work with for lack of better words. If you just needed a stock reflash but you wanted the most recent revision there would be no need to do all the extra work that I have to do. In addition I have made a bunch of custom RaceRom maps so those all have to be added to the base ROMs also haha. Make any better sense?

[regal]

Originally Posted by AZFA20

I am not sure what you are using in regard to tuning and there may be some confusion because there is sort of different conversations taking place. The ROMs we are referring to are base ROMs. For someone like me who is highly modified there is very little left in the tables that are stock when I am done tuning so I have to start with a base ROM and build from there which for retail consumers requires the copy and paste method from my already built ROMs. Trade versions are slightly different with the comparison software that trade clients have access to (Basically for this scenario their life is made a little easier to transfer data from one ROM to another).

So to make sense of what we are referring to is more of an EcuTek understanding. I was given a B01C stock ROM this evening so now I will do the same as I did with A00,A01,and now B01. So an example of some things that change between revisions are min and max values in certain tables. The transient retard table for instance is a perfect example between A00 and A01. We could alter the tables but we were limited with the range of tuning if that makes sense. I don't want to get too technical because I don't know how familiar you are with what I am talking about. Denso along the way increases our ability to tune or simply build a better foundation from which to work with for lack of better words. If you just needed a stock reflash but you wanted the most recent revision there would be no need to do all the extra work that I have to do. In addition I have made a bunch of custom RaceRom maps so those all have to be added to the base ROMs also haha. Make any better sense?

Yes it mkes sense tuning has come a log way since I did with Honda's


My understanding was that none of the software had everything defined, so copy past you may miss something?


Also PM sent

[AZFA20]

Originally Posted by regal

Yes it mkes sense tuning has come a log way since I did with Honda's


My understanding was that none of the software had everything defined, so copy past you may miss something?


Also PM sent

Correct but only if you wanted to transfer say tables you already had previously modified on the previous ROM.

[regal]

Originally Posted by AZFA20

Correct but only if you wanted to transfer say tables you already had previously modified on the previous ROM.

So EcuTek has everything defined, I thought there were thousands of table. You have got to be patient as all hell. A lot different than the Hondata days.

[AZFA20]

Originally Posted by regal

So EcuTek has everything defined, I thought there were thousands of table. You have got to be patient as all hell. A lot different than the Hondata days.

Not thousands but several hundred once you add the custom maps to the equation haha. It's for sure time consuming but I have gotten quick at it. At first it was frustrating but in hindsight it literally forced me to become very familiar with all the maps and have made things easier for me in the long run