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Tuning Evo789 ACD

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Old Jan 6, 2014, 04:07 AM   #16
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hallo everybody, I'm a new entry from Italy!
Why buy or build a new harness for flashing the acd ecu? Its only need to put in the connector the flash wire (ecu pin 25) and connect it directly to the relflsh connector of the open port; the op tactrix can simply be connect to the stock obd socket.
It works perfectly and it much easy to read, reflash and log.
Here some pict:
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Tuning Evo789 ACD-img_2323.jpg   Tuning Evo789 ACD-img_2325.jpg  
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Old Jan 6, 2014, 04:49 AM   #17
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Marlin, I have million question for you!!

1- I flash tha RA-K2 (for evo 7 401501) in my EDM evo 8 acd+ayc, but logging the pressure it still working between 12 and 15 bar, why?
2- Is the two pressure value min e max settable in the rom, or there is a fix switch in the pomp group?
3- I can't understand the exatly meaning of the 'lockup' B.x maps, why the % value decrease with higher value of throttle?

That's all by now, hopeing it could be a collective interest!

Bye!
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Old Jan 6, 2014, 07:24 AM   #18
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pump pressure, for a good working pump is always between 12 and 15 bar.. 15 bar is the max operating pressure and you can not go higher because there is a pressure valve inside the pump which opens at 15 bar..
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Old Jan 6, 2014, 09:58 AM   #19
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ok, so in evo 7 the pressure switch is higher?
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Old Jan 6, 2014, 12:44 PM   #20
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I will post up a new set of xmls later today, with improved descriptions and some tuning notes included within the xml on what the maps do.
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Old Jan 6, 2014, 12:50 PM   #21
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Quote:
Originally Posted by Floppyz View Post
ok, so in evo 7 the pressure switch is higher?


e7,8,9 do not have a pressure switch but a pressure sensor... the pumps are the same otherwise..
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Old Jan 6, 2014, 03:40 PM   #22
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Quote:
Originally Posted by Floppyz View Post
hallo everybody, I'm a new entry from Italy!
Why buy or build a new harness for flashing the acd ecu? Its only need to put in the connector the flash wire (ecu pin 25) and connect it directly to the relflsh connector of the open port; the op tactrix can simply be connect to the stock obd socket.
It works perfectly and it much easy to read, reflash and log.
Here some pict:


I also do well



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Old Jan 6, 2014, 03:59 PM   #23
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Quote:
Originally Posted by merlin.oz View Post
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.

7/1/2014, revised xml with corrections and some included tuning notes.
Merlin, is this the ROM I posted in the other thread?
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Old Jan 6, 2014, 04:15 PM   #24
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I am pretty sure the US relief is 16 bar. There was a post about this A LONG time ago talking about the idle pressures and curve for each mode. Doesnt really matter if its 15 or 16 I suppose as its enough clamping otherwise.
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Old Jan 6, 2014, 04:42 PM   #25
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Siluck2, yes it is.
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Old Jan 6, 2014, 07:33 PM   #26
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Originally Posted by JohnBradley View Post
I am pretty sure the US relief is 16 bar. There was a post about this A LONG time ago talking about the idle pressures and curve for each mode. Doesnt really matter if its 15 or 16 I suppose as its enough clamping otherwise.
well, that could be easy enough to check but I have no USDM pumps with me.

Could be though... as USDM pumps have a different body design but I would say that difference wasnt intentional..
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Old Jan 7, 2014, 09:57 PM   #27
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Further improvements to previously posted xmls up-loaded.
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Old Jan 8, 2014, 11:50 AM   #28
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Quote:
Originally Posted by merlin.oz View Post
Further improvements to previously posted xmls up-loaded.
Merlin:
I think there is something wrong with new xml: A's maps are swapped with B maps...


Are the proportional valves 'absolute' pressure control or relative? I mean: if I have 15 bar pomp pressure and I drive at 50% (for axample 600mA) the valve I should have 7.5bar at the clutch; if the pump pressure rise till 18 bar and the current is still drive to 50% (still 600mA) wich pressure I'll have on the clutch? still 7.5 or 9 bar?

bye
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Old Jan 8, 2014, 01:54 PM   #29
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The A-Maps are Throttle v Speed

The B-Maps are G-Force v Speed

The C-Maps are Steering Angle v Speed

I think they all kind of overlay, so you end up with a 5 dimensional map, but there are probably other factors involved dictating how they are applied.
For example, there may be limiting or gain tables dictating the "weighting" of each map. Dont know at this stage.
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Old Jan 8, 2014, 02:34 PM   #30
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Marlin,
I mean there is something swapped, take a loock at this pic:
A map with B map, Accel witch decel... Maybe?

What is Tune Notes??
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Tuning Evo789 ACD-merlin.jpg  
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