Tuning Evo789 ACD
#1
Evolved Member
Thread Starter
Tuning Evo789 ACD
It would seem that there is growing interest (at least in the US) in ACD tuning/flashing, so I will make a contribution.
Edit 07-01-2014: Revised xml with map label corrections and improved scaling.
Edit 08-01-2014: Revised xml with Snow and Gravel maps swapped, Pump Limits added and enhanced Tuning Notes.
Edit 25-01-2014: Revised xml, lots of revisions and additions.
Edit 09-02-2014: Revisions to 401702 xml, showing current work/thinking on AYC Control. Not complete by a long way and the scalings are speculative. The other posted xmls have not been updated yet.
Edit 07-01-2014: Revised xml with map label corrections and improved scaling.
Edit 08-01-2014: Revised xml with Snow and Gravel maps swapped, Pump Limits added and enhanced Tuning Notes.
Edit 25-01-2014: Revised xml, lots of revisions and additions.
Edit 09-02-2014: Revisions to 401702 xml, showing current work/thinking on AYC Control. Not complete by a long way and the scalings are speculative. The other posted xmls have not been updated yet.
Last edited by merlin.oz; Feb 8, 2014 at 04:00 PM.
#2
Evolved Member
Thread Starter
Some general notes on ACD Module Flashing:
You will need a Tactrix OpenPort2 flashing cable.
You will need to make a bench flashing cable.
There is a checksum required, which is included in the xml shown.
Evo8 and Evo9 can use the same ROMs ie are interchangeable with the testing I have done so far.
Evo7 ACD Modules run a different line pressure so a DTC is raised if you flash an Evo7 ROM into your Evo8-9.
EVO-789 ACD MODULE BENCH FLASHING HARNESS
ACD pin 13, +12V
ACD pin 25, Flash
ACD pin 31, +12V
ACD pin 35, OBD pin 7
ACD pin 42, ground
OBD pin 4, ground
OBD pin 5, ground
OBD pin 16, +12V
You will need a Tactrix OpenPort2 flashing cable.
You will need to make a bench flashing cable.
There is a checksum required, which is included in the xml shown.
Evo8 and Evo9 can use the same ROMs ie are interchangeable with the testing I have done so far.
Evo7 ACD Modules run a different line pressure so a DTC is raised if you flash an Evo7 ROM into your Evo8-9.
EVO-789 ACD MODULE BENCH FLASHING HARNESS
ACD pin 13, +12V
ACD pin 25, Flash
ACD pin 31, +12V
ACD pin 35, OBD pin 7
ACD pin 42, ground
OBD pin 4, ground
OBD pin 5, ground
OBD pin 16, +12V
Last edited by merlin.oz; Sep 25, 2013 at 03:54 AM.
#4
EvoM Guru
iTrader: (1)
That is partially covered in the break through reading flashing acd thread.
Merlin thanks !!!
I have the acd rom from evoscan and a c1 rom. They're for a 9 and 8 respectively but I checked addresses and they were the same for what I checked.
Good to confirm they are interchangeable!
Merlin thanks !!!
I have the acd rom from evoscan and a c1 rom. They're for a 9 and 8 respectively but I checked addresses and they were the same for what I checked.
Good to confirm they are interchangeable!
#6
And is there a tutorial with pretty pictures for us more technically challenged folks that can't quite picture what to build from Merlin's pinout?
#7
Evolved Member
iTrader: (6)
OBD2 pinout
Might look in the first post, there is a schema that shows basically how to do your bench harness.
For ACD pinout here it is:
Last edited by domyz; Sep 25, 2013 at 06:19 AM.
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#8
Evolving Member
iTrader: (15)
while I'm happy with the performance increase in full throttle applications (80%-100%) with my Weir 12 plate rear at the track, the diff(s) still don't lock as hard as I'd like during partial/maintenance throttle (~40%-70%). I'm currently looking into ACD tuning for next year and very interested in where this is going.
thanks for sharing
thanks for sharing
#10
Newbie
Thanks for sharing Merlin.
Just a side not to yours, in my testing, I've found that the Evo 8 and 9 ACD ecu's are not directly interchangeable. Putting an Evo 8MR/9 ACD ECU into my JDM Evo 8 GSR has resulted in the 3 lights once moving.
I believe there is a way to resolve with with a wiring mod, but i have not tested it as yet.
Specifically i'm referring to ID 401403 (JDM Evo 8) and swapping to a 401404 or 403100 rom ID.
Just a side not to yours, in my testing, I've found that the Evo 8 and 9 ACD ecu's are not directly interchangeable. Putting an Evo 8MR/9 ACD ECU into my JDM Evo 8 GSR has resulted in the 3 lights once moving.
I believe there is a way to resolve with with a wiring mod, but i have not tested it as yet.
Specifically i'm referring to ID 401403 (JDM Evo 8) and swapping to a 401404 or 403100 rom ID.
#13
Evolved Member
Thread Starter
This set is for the USA Evo9 ACD Control Module, 401702 ROM, Case ID 8631A028.
All the ACD Control Modules I have seen have the FA chip, which the 1.3U cable wont flash. But Its a big world, who knows what else is out there.
Edit 7/1/2014: Revised xml with map corrections and some included tuning notes.
Edit 8/1 2014: Revised xml with Snow and Gravel maps swapped, Pump Limits added and enhanced Tuning Notes.
All the ACD Control Modules I have seen have the FA chip, which the 1.3U cable wont flash. But Its a big world, who knows what else is out there.
Edit 7/1/2014: Revised xml with map corrections and some included tuning notes.
Edit 8/1 2014: Revised xml with Snow and Gravel maps swapped, Pump Limits added and enhanced Tuning Notes.
Last edited by merlin.oz; Jan 7, 2014 at 09:55 PM.