JECS ROM Download

[STi6]

No, these are all 99/00 model cars without AVCS

[richh]

Eh? None of the JECS ECUs support AVCS West - this feature came in with the New Age cars, and of course this is the point at which Subaru switched to Denso.

[STi6]

Some more ROM files, sorry if some are reposts but this should cover all ECU types from 99/00 models

[STi6]

And the JDM models...

[NoCtrl]

Eh? None of the JECS ECUs support AVCS West - this feature came in with the New Age cars, and of course this is the point at which Subaru switched to Denso.

...,yes, the ECU switch.. ..there must be a story behind this..
AVCS should also have a history inside Subaru..?

And a reflashable ECU in 99/00 apears to me as early..

STI6: Thanks for the ECU-images

[richh]

...,yes, the ECU switch.. ..there must be a story behind this..

No doubt, but it's probably a really boring story - likely to be along the lines that the control system parts supply contracts were up for renewal with the GD/GG, and Denso put in the best quote.

AVCS should also have a history inside Subaru..?

Not sure what you're trying to ask here chap. It's a given that FHI would have been researching it, given the potential advtages and also the fact that the likes of Honda had already shown it could be done in a cost-efficient and reliable package.

And a reflashable ECU in 99/00 apears to me as early..

Again not quite sure what you're trying to say but again flash-MCU based engine control was becoming commonplace in the motor industry by the time Subaru went to it. I could be wrong, but I'm also under the impression that the US-driven OBD specs required flashable control units.

[west_minist]

My JECS Non-Turbo have AVCS. So as the models appearing the Legacies.

I think there tested out on the NA before introducing them 2 years later.

So, 99-01 for NA, then 01+ for turbo

I guess the same will be for the lift, which will most probably appear in 08+ turbo models.

[west_minist]

STI6, you have any JDM STI ones?

You have access to the EcuTek pro?

[west_minist]

STI6, you have any JDM STI ones?

You have access to the EcuTek pro?

[west_minist]

Can anyone tell mewhat these numbers look like?

[Hitokiri]

STI6!!!!! YESSSSSS!!!!

west - thats the fuel map

try scaling the data values with the following

14.7/(1 + (([value]-128))/128))

[Hitokiri]

It is very interesting to note, looking at these maps that the P1 ecu shown seems to have the same main maps as the JDM 040 ecu.............

I was under the impression that prodrive had a special tune on their car, but it seems they just slapped the slightly more powerful JDM maps in there and called it a day.. verrrry interesting.

[Hitokiri]

Interestingly enough these ecus all seem to use the same structure for storing major maps

here is the xml I have been using lately:

The load is still wrong - but otherwise most conversion seem ok. Its good for compairing fuel - timing - boost - wg tables though

Code: Select all

   <ecu_struct id="xd" type="JECS ECU" include="" desc_size="#20000" reverse_bytes="True" file_name="99-00 jecs ecu.xml">
      <map name="Ignition Correction" type="3" active="1" help="" level="0">
         <rows count="16" func_2val="[value]" func_val2="[value]" offset="#0" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <cols count="16" func_2val="[value]" func_val2="[value]" offset="#0" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <data order="cr" func_2val="[value]" func_val2="[value]" offset="#41C" power="1" signed="False" format="%.2f" caption="" desc="Ignition degree" color_dir="0" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="Ignition Timing -Low Octane" type="3" active="1" help="" level="0">
         <rows count="16" func_2val="[value]*50" func_val2="[value]" offset="#835" power="1" signed="False" format="%.0f" caption="" desc="RPM"/>
         <cols count="16" func_2val="[value]/10" func_val2="[value]" offset="#820" power="1" signed="False" format="%.2f" caption="" desc="MAF Sensor Voltage"/>
         <data order="cr" func_2val="[value]" func_val2="[value]" offset="#71C" power="1" signed="False" format="%.0f" caption="" desc="" color_dir="0" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="?" type="2" active="1" help="" level="0">
         <rows count="16" func_2val="[value]*50" func_val2="[value]" offset="#8C0" power="1" signed="False" format="%.0f" caption="" desc=""/>
         <data func_2val="[value]" func_val2="[value]" offset="#8D0" power="1" signed="False" format="%.2f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="?1" type="2" active="1" help="" level="0">
         <rows count="8" func_2val="[value]*50" func_val2="[value]" offset="#A7B" power="1" signed="False" format="%.0f" caption="" desc=""/>
         <data func_2val="[value]" func_val2="[value]" offset="#A84" power="1" signed="False" format="%.2f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="012" type="3" active="1" help="" level="0">
         <rows count="8" func_2val="[value]*50" func_val2="[value]" offset="#CCC" power="1" signed="False" format="%.0f" caption="" desc="RPM"/>
         <cols count="8" func_2val="[value]/10" func_val2="[value]" offset="#CC4" power="1" reverse_bytes="False" signed="False" format="%.2f" caption="" desc=""/>
         <data order="cr" func_2val="[value]" func_val2="[value]" offset="#CD4" power="1" signed="False" format="%.2f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="Fuel Map" type="3" active="1" help="" level="0">
         <rows count="16" func_2val="[value]*50" func_val2="[value]" offset="#137F" power="1" signed="False" format="%.0f" caption="" desc="RPM"/>
         <cols count="16" func_2val="[value]/10" func_val2="[value]" offset="#136F" power="1" signed="False" format="%.2f" caption="" desc="MAF Sensor Voltage"/>
         <data order="cr" func_2val="14.7/(1 + (([value]-128))/128))" func_val2="[value]" offset="#138F" power="1" signed="False" format="%.2f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="??11" type="3" active="1" help="" level="0">
         <rows count="3" func_2val="[value]" func_val2="[value]" offset="#0" power="1" signed="False" format="%.0f" caption="" desc=""/>
         <cols count="16" func_2val="[value]" func_val2="[value]" offset="#0" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <data order="cr" func_2val="[value]" func_val2="[value]" offset="#25D2" power="1" signed="False" format="%.0f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>   <map name="Boost" type="3" active="1" help="" level="0">
         <rows count="8" func_2val="[value]*50" func_val2="[value]" offset="#1DF3" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <cols count="8" func_2val="[value]*100/169" func_val2="[value]" offset="#1DE2" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <data order="cr" func_2val="[value] - 94) * .15425" func_val2="[value]" offset="#1EC5" power="1" signed="False" format="%.2f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="WG FF" type="3" active="1" help="" level="0">
         <rows count="8" func_2val="[value]*50" func_val2="[value]" offset="#1DFB" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <cols count="8" func_2val="[value]*100/169" func_val2="[value]" offset="#1DEA" power="1" signed="False" format="%.2f" caption="" desc=""/>
         <data order="cr" func_2val="[value]" func_val2="[value]" offset="#1F05" power="1" signed="False" format="%.2f" caption="" desc="" color_dir="1" inc="1" incb="5" inc_dir="1"/>
      </map>
      <map name="Ignition Timing - High Octane" type="3" active="1" help="" level="0">
         <rows count="16" func_2val="[value]*50" func_val2="[value]" offset="#835" power="1" signed="False" format="%.0f" caption="" desc="RPM"/>
         <cols count="16" func_2val="[value]/10" func_val2="[value]" offset="#820" power="1" signed="False" format="%.2f" caption="" desc="MAF Sensor Voltage"/>
         <data order="cr" func_2val="[value]" func_val2="[value]" offset="#61C" power="1" signed="False" format="%.0f" caption="" desc="" color_dir="0" inc="1" incb="5" inc_dir="1"/>
      </map>
   </ecu_struct>


[STi6]

They will all have the same structure. It will just be interesting to see how the maps differ, say from a AE802 (WRX) to a (JDM STi) AF001

[STi6]

STI6, you have any JDM STI ones?

You have access to the EcuTek pro?

AFAIK the AF041 is a JDM STi, because thats the same ECU as in my car.
I dont have access to ECUTek unfortunately.