Ecutek engine load limiters - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

gpvecchi · 06-28-2021, 05:01 PM

These are replaced by RaceRom Engine load limiter, but do you know how do they are being applied in stock ROM?
I mean, is like one of the 2 being used in safe mode or else?

steve99 · 06-29-2021, 06:11 AM

load A and B tables are same make sure you keep them same and also sane as ecutek load table or weird stuff can happen

tomm.brz · 06-29-2021, 09:18 AM

If racerom is applied, engine load lim A and B and totally ignored all the time and superseded by ecutek's one like gpvecchi thought .. you could put random low values in A and B table, they 'll get ignored anyway if the tune has racerom

but yeah actually subaru modified them in the very latest restyling oem roms

my guess is one is used during the Power AFR mode , and the other one during normal mode
Power afr and normal afr mode are triggered by catalyst temp, there is a table for it

gpvecchi · 06-29-2021, 04:54 PM

Thanks Tommy, that I was looking for. Engine load lim B should be the one in normal mode, right?

steve99 · 06-30-2021, 08:29 AM

People forget ecuitek or romraider are reverse engineering these roms from compiled machine code your not workingcwith the source code.

sometimes when the code is compiled the same table ends up in two places.

This is the case for tables like closed loop fuel tables A and B and the load limot tables A and B also with O2 sensor scaling has tavles a and b.

Its different for timing tables A limp mode low IAM and B normal mode.

If you were working on the actual source code then there would only be one load limit table, but when the compiler runs some tables get duplicated in the compiled code the ecu uses and that we work with.

So if you make those tables A and B different then reary unusual thigs may happen and in some cases it will use A values and some cases B values depending on which path the compliled code uses

This may not matter too much on NA cars but on a boosted car it may cause a drastic lean condition due load truncation.

Yes the ecutek load table is supposed to overide the standard load tables but there has been bugs before

safest to make ALL three load tables same

tomm.brz · 07-01-2021, 07:47 AM

i agree and still have no idea in how to answer to gpvecchi, but i m sure with euro tune and rr12.1 there is no bug, and the engine load limiter by ecutek always overrides the 2 oem tables

06-28-2021, 05:01 PM	#1
gpvecchi Senior Member Join Date: Mar 2018 Drives: Toyota 86 GT Limited PP (Model G) Location: Italy Posts: 1,048 Thanks: 411 Thanked 355 Times in 199 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	Ecutek engine load limiters These are replaced by RaceRom Engine load limiter, but do you know how do they are being applied in stock ROM? I mean, is like one of the 2 being used in safe mode or else?

06-30-2021, 08:29 AM	#5
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,992 Times in 2,983 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	People forget ecuitek or romraider are reverse engineering these roms from compiled machine code your not workingcwith the source code. sometimes when the code is compiled the same table ends up in two places. This is the case for tables like closed loop fuel tables A and B and the load limot tables A and B also with O2 sensor scaling has tavles a and b. Its different for timing tables A limp mode low IAM and B normal mode. If you were working on the actual source code then there would only be one load limit table, but when the compiler runs some tables get duplicated in the compiled code the ecu uses and that we work with. So if you make those tables A and B different then reary unusual thigs may happen and in some cases it will use A values and some cases B values depending on which path the compliled code uses This may not matter too much on NA cars but on a boosted car it may cause a drastic lean condition due load truncation. Yes the ecutek load table is supposed to overide the standard load tables but there has been bugs before safest to make ALL three load tables same Last edited by steve99; 06-30-2021 at 08:50 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Adjusting AFR with Engine Load Compensation (instead of Load Limits)	Tor	Software Tuning	33	08-17-2021 09:58 AM
Ecutek won’t load updated firmware	sroby	Software Tuning	10	06-30-2018 12:31 AM
Engine Load Comp (MP)	Nah	Software Tuning	8	01-20-2017 06:30 AM
Where should my engine load be around idle?	Astroboy	Forced Induction	8	02-06-2016 02:07 AM
EcuTek Unable to Increase Load Limits	Skorov	Software Tuning	35	06-25-2014 01:56 PM

06-29-2021, 06:11 AM	#2
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,996 Thanks: 1,035 Thanked 4,992 Times in 2,983 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	load A and B tables are same make sure you keep them same and also sane as ecutek load table or weird stuff can happen

06-29-2021, 09:18 AM	#3
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,276 Thanks: 515 Thanked 1,121 Times in 811 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	If racerom is applied, engine load lim A and B and totally ignored all the time and superseded by ecutek's one like gpvecchi thought .. you could put random low values in A and B table, they 'll get ignored anyway if the tune has racerom but yeah actually subaru modified them in the very latest restyling oem roms my guess is one is used during the Power AFR mode , and the other one during normal mode Power afr and normal afr mode are triggered by catalyst temp, there is a table for it

06-29-2021, 04:54 PM	#4
gpvecchi Senior Member Join Date: Mar 2018 Drives: Toyota 86 GT Limited PP (Model G) Location: Italy Posts: 1,048 Thanks: 411 Thanked 355 Times in 199 Posts Mentioned: 14 Post(s) Tagged: 0 Thread(s)	Thanks Tommy, that I was looking for. Engine load lim B should be the one in normal mode, right?

07-01-2021, 07:47 AM	#6
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,276 Thanks: 515 Thanked 1,121 Times in 811 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	i agree and still have no idea in how to answer to gpvecchi, but i m sure with euro tune and rr12.1 there is no bug, and the engine load limiter by ecutek always overrides the 2 oem tables

User Name		Remember Me?
Password