Hot Start Enrichment Tables Found!

wrxt4cy · **Posted:** Mon Jul 02, 2012 8:59 pm

td-d wrote:

Ok, here are the addresses for AE5I910V - no time to code them into XML, but you can use the definitions above. Use the address after each 'ROM:'

---
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EDIT: I've got all the 'post-start' tables as well, just too late to pull all the addresses together now - I'll post as soon as I get the chance.

Thanks for this!

I'm slowly understanding creating my own definitions for RR and I think I have got them for a couple of the tables: Hot restart enrich init high and hot restart init high activation min coolant temp:

Code:

AE5I910V:

<table name="Hot Restart Enrich Initial High" storageaddress="CA72C" />
<table name="Hot Restart Enrich Initial High Activation Min Coolant Temp" storageaddress="CA71C" />

32BITBASE:

<table type="2D" name="Hot Restart Enrich Initial High" category="Fueling - Hot Restart" storagetype="float" endian="little" sizey="1" userlevel="5">
      <scaling units="AFR points additive" expression="x" to_byte="x" format="0.000" fineincrement=".01" coarseincrement=".1" />
      <table type="Static Y Axis" name="Enrichment" sizey="1">
        <data>Offset</data>
      </table>
      <description>Hot Restart Enrich Initial High</description>
    </table>
    <table type="2D" name="Hot Restart Enrich Initial High Activation Min Coolant Temp" category="Fueling - Hot Restart" storagetype="float" endian="little" sizey="1" userlevel="5">
      <scaling units="Degrees (F)" expression="(x*1.8)+32" to_byte="(x-32)/1.8" format="#" fineincrement="1" coarseincrement="10" />
      <table type="Static Y Axis" name="Enrichment disabled below" sizey="1">
        <data>Minimum</data>
      </table>
      <description>Hot Restart Enrich Initial High Activation Min Coolant Temp</description>
    </table>

Did I get these right?

I assume the coolant temp needed to be converted from C to F, right?

Opening up my rom I see the min coolant temp for high activation being 185* F - does that sounds right? Low would be 174* F or so. These seem higher than I expected but maybe not.

It seems like I could just raise these minimum coolant temp values higher than the ECU would ever see to effectively disable hot start enrichment but then that leads to me wondering if I need hot restart enrichment and if I do, how much do I need? I know I don't need to be hanging in the low 11 AFRs like I am but I'm wondering if I need to be rich than my normal target while starting up a hot engine. Is the extra fuel intended to cool down the combustion chambers quickly or something?

It also seems that I'm going to need the post start enrichment tables defined to full cure my rich idle misfires since those add additional enrichment.

Thanks again!

td-d · **Posted:** Mon Jul 02, 2012 10:13 pm

I hate to admit it, I'm a bit of a tard when it comes to RR definitions

That's why I usually use Ecuflash, much quicker and straighforward to add experimental parameters to.

In Celsius, the high coolant temp is 85 stock, and 79 minimum - so yes, those values are correct.

Here are the raw tables straight from IDA for post start - the y axis is CAADC for all the tables, and the next value is the table location (followed by the multiplier and offset). A note on the temperature axis - all these tables, and the Minimum Primary Base Enrichment tables use the same axis - so changing the scale changes the base enrichment scale as well. The bulk of the tables are added to the start up enrichment values (other than the delay values, and the multiplier).

Code:

ROM:000A39E0 Table_Post_Start_Enrich_Low_Speed_Decay_Initial_1A:.data.w h'10
ROM:000A39E0                                         ; DATA XREF: sub_2F800+44o
ROM:000A39E0                                         ; ROM:off_2FA34o
ROM:000A39E2                 .data.w h'800
ROM:000A39E4                 .data.l h'CAADC
ROM:000A39E8                 .data.l word_CB822      ; = 1.5
ROM:000A39EC                 .float 0.00390625
ROM:000A39F0                 .float 0.0
ROM:000A39F4 Table_Post_Start_Enrich_Low_Speed_Decay_Initial_1B:.data.w h'10
ROM:000A39F4                                         ; DATA XREF: sub_2F800:loc_2F858o
ROM:000A39F4                                         ; ROM:off_2FA38o
ROM:000A39F6                 .data.w h'800
ROM:000A39F8                 .data.l h'CAADC
ROM:000A39FC                 .data.l word_CB842      ; = 1.0
ROM:000A3A00                 .float 0.00390625
ROM:000A3A04                 .float 0.0

ROM:000A3A08 Table_Post_Start_Enrich_Low_Speed_Decay_Initial_2A:.data.w h'10
ROM:000A3A08                                         ; DATA XREF: sub_2F800+1Eo
ROM:000A3A08                                         ; ROM:off_2FA20o
ROM:000A3A0A                 .data.w h'800
ROM:000A3A0C                 .data.l h'CAADC
ROM:000A3A10                 .data.l word_CB862      ; = 1.0
ROM:000A3A14                 .float 0.00390625
ROM:000A3A18                 .float 0.0

ROM:000A3A1C Table_Post_Start_Enrich_Low_Speed_Decay_Initial_2B:.data.w h'10
ROM:000A3A1C                                         ; DATA XREF: sub_2F800:loc_2F832o
ROM:000A3A1C                                         ; ROM:off_2FA30o
ROM:000A3A1E                 .data.w h'800
ROM:000A3A20                 .data.l h'CAADC
ROM:000A3A24                 .data.l word_CB882      ; = 1.0
ROM:000A3A28                 .float 0.00390625
ROM:000A3A2C                 .float 0.0

ROM:000A3A3C Table_Post_Start_Enrich_High_Speed_Decay_Initial_Start_1A:.data.w h'10
ROM:000A3A3C                                         ; DATA XREF: sub_2FB1A+54o
ROM:000A3A3C                                         ; ROM:off_2FDB0o
ROM:000A3A3E                 .data.w h'800
ROM:000A3A40                 .data.l h'CAADC
ROM:000A3A44                 .data.l word_CB8C2      ; = 5.0e-1
ROM:000A3A48                 .float 0.00024414062
ROM:000A3A4C                 .float 0.0

ROM:000A3A78 Table_Post_Start_Enrich_High_Speed_Decay_Initial_Start_1B:.data.w h'10
ROM:000A3A78                                         ; DATA XREF: sub_2FB1A:loc_2FB96o
ROM:000A3A78                                         ; ROM:off_2FDBCo
ROM:000A3A7A                 .data.w h'800
ROM:000A3A7C                 .data.l h'CAADC
ROM:000A3A80                 .data.l word_CB922      ; = 3.101e-1
ROM:000A3A84                 .float 0.00024414062
ROM:000A3A88                 .float 0.0

ROM:000A3AA0 Table_Post_Start_Enrich_High_Speed_Decay_Initial_Start_2A:.data.w h'10
ROM:000A3AA0                                         ; DATA XREF: sub_2FB1A+68o
ROM:000A3AA0                                         ; ROM:off_2FDB8o
ROM:000A3AA2                 .data.w h'800
ROM:000A3AA4                 .data.l h'CAADC
ROM:000A3AA8                 .data.l word_CB962      ; = 6.001e-1
ROM:000A3AAC                 .float 0.00024414062
ROM:000A3AB0                 .float 0.0

ROM:000A3ADC Table_Post_Start_Enrich_High_Speed_Decay_Initial_Start_2B:.data.w h'10
ROM:000A3ADC                                         ; DATA XREF: sub_2FB1A+98o
ROM:000A3ADC                                         ; ROM:off_2FDC4o
ROM:000A3ADE                 .data.w h'800
ROM:000A3AE0                 .data.l h'CAADC
ROM:000A3AE4                 .data.l word_CB9C2      ; = 3.101e-1
ROM:000A3AE8                 .float 0.00024414062
ROM:000A3AEC                 .float 0.0

ROM:000A3B10 Table_Post_Start_Enrich_High_Speed_Decay_Step_Value_1:.data.w h'10
ROM:000A3B10                                         ; DATA XREF: sub_2FB00+1A8o
ROM:000A3B10                                         ; ROM:off_2FE0Co
ROM:000A3B12                 .data.w h'800
ROM:000A3B14                 .data.l h'CAADC
ROM:000A3B18                 .data.l word_CBA22      ; = 3.996e-4
ROM:000A3B1C                 .float 9.5367432e-7
ROM:000A3B20                 .float 0.0

ROM:000A3B38 Table_Post_Start_Enrich_High_Speed_Decay_Step_Value_2:.data.w h'10
ROM:000A3B38                                         ; DATA XREF: sub_2FB00+1F4o
ROM:000A3B38                                         ; ROM:off_2FE18o
ROM:000A3B3A                 .data.w h'800
ROM:000A3B3C                 .data.l h'CAADC
ROM:000A3B40                 .data.l word_CBA62      ; = 3.996e-4
ROM:000A3B44                 .float 9.5367432e-7
ROM:000A3B48                 .float 0.0

ROM:000A3438 Table_Post_Start_Enrich_Low_Speed_Decay_Delay_1:.data.w h'10
ROM:000A3438                                         ; DATA XREF: sub_2F7E6:loc_2F9C4o
ROM:000A3438                                         ; ROM:off_2FA94o
ROM:000A343A                 .data.w h'400
ROM:000A343C                 .data.l h'CAADC
ROM:000A3440                 .data.l byte_CAD59      ; = 6.0

ROM:000A3444 Table_Post_Start_Enrich_Low_Speed_Decay_Delay_2:.data.w h'10
ROM:000A3444                                         ; DATA XREF: sub_2F7E6+192o
ROM:000A3444                                         ; ROM:off_2FA84o
ROM:000A3446                 .data.w h'400
ROM:000A3448                 .data.l h'CAADC
ROM:000A344C                 .data.l byte_CAD69      ; = 6.0

ROM:000A3450 Table_Post_Start_Enrich_Low_Speed_Decay_Delay_Multiplier:.data.w h'10
ROM:000A3450                                         ; DATA XREF: sub_2F7E6+1C8o
ROM:000A3450                                         ; sub_2F7E6+214o ...
ROM:000A3452                 .data.w h'400
ROM:000A3454                 .data.l h'CAADC
ROM:000A3458                 .data.l byte_CAD79      ; = 9.219e-1
ROM:000A345C                 .float 0.0078125
ROM:000A3460                 .float 0.0

td-d · **Posted:** Mon Jul 02, 2012 11:13 pm

Also, as promised, the misfire tables. The A/B tables are dependent on a logger variable - have not yet had the time to identify what the logic is. The 3D table is the threshold for the number of misfires required to trigger a DTC, whilst the the MAP threshold looks like it is a minimum value required for the counter to be activated (don't forget that the raw values are in mmHg). There are a bunch of other RPM values around the routine, which I've not had time to scrutinise, but I think would be RPM thresholds of some type.

Code:

ROM:000A2D70 Table_Misfire_DTC_Threshold:.data.w h'A ; DATA XREF: sub_7813C+1Ao
ROM:000A2D70                                         ; sub_7817E:off_7821Co
ROM:000A2D72                 .data.w h'E
ROM:000A2D74                 .data.l flt_C69D0
ROM:000A2D78                 .data.l flt_C69F8
ROM:000A2D7C                 .data.l byte_C6A30      ; = 1.48e2
ROM:000A2D80                 .data.l 0

ROM:000A28FC Misfire_Count_MAP_Threshold_B:.data.w h'E ; DATA XREF: sub_776B4+5Ao
ROM:000A28FC                                         ; sub_776B4:off_7778Co
ROM:000A28FE                 .data.w 0
ROM:000A2900                 .data.l flt_C5600
ROM:000A2904                 .data.l flt_C5638

ROM:000A2908 Misfire_Count_MAP_Threshold_A:.data.w h'E ; DATA XREF: sub_776B4+56o
ROM:000A2908                                         ; sub_776B4:off_77788o
ROM:000A290A                 .data.w 0
ROM:000A290C                 .data.l flt_C5670
ROM:000A2910                 .data.l flt_C56A8

dschultz · **Posted:** Tue Jul 03, 2012 4:18 am

Those misfire tables should line-up with what is published in the car's shop manual in the misfire DTC troubleshooting section. They do for mine at least, when I found them a couple years ago.

td-d · **Posted:** Tue Jul 03, 2012 7:51 am

Thanks for that Dale, appreciated.

So from the manual:

- the x axis is : Intake air (g(oz)/rev)
- the y axis is Engine Speed (RPM)
- the values are "Catalyst damage misfire judgment value"

Also:

Time Needed for Diagnosis: 200 engine revs

td-d · **Posted:** Tue Jul 03, 2012 7:57 am

Damn... that DTC diagnosis section is a gold mine of stock data to identify tables and parameters!

dschultz · **Posted:** Tue Jul 03, 2012 1:04 pm

td-d wrote:

Damn... that DTC diagnosis section is a gold mine of stock data to identify tables and parameters!

Yup and timing/timer parameters!

Here's my old thread:
viewtopic.php?f=15&t=6746

td-d · **Posted:** Tue Jul 03, 2012 1:33 pm

dschultz wrote:

td-d wrote:

Damn... that DTC diagnosis section is a gold mine of stock data to identify tables and parameters!

Yup and timing/timer parameters!

Here's my old thread:
viewtopic.php?f=15&t=6746

My fail - did not even see that thread! Oh well - I've documented how to find it, and the related MAP threshold in this thread: viewtopic.php?f=34&t=8577

td-d · **Posted:** Tue Jul 03, 2012 4:54 pm

Some interesting stuff in there... I see much of my time being wasted in the near future

Bamofo · **Joined:** Mon Jul 02, 2007 11:46 am **Posts:** 430

Merp wrote:

td-d wrote:

Merp wrote:

Any luck finding a minimum (or max) IPW? I'm trying to determine if the limits occur in the 'preliminary' IPW, or after it is stored in the 4byte logger parameter.

Just checked - from what I could see, it's the 'preliminary' value - i.e. the value that sits directly above the injector flow scaling.

Awesome, will post my findings when I do some more digging

Cant wait to hear feedback on if there is a MAX IPW on the A2UJ000J. Thanks for all your help Merp and TD-D!!!

Merp · **Joined:** Thu Jul 23, 2009 5:46 pm **Posts:** 863

Hot start table defs (ECUFlash) for A8DH200X - A8DH202X here:

A8DH202X.xml, to download: Open this link. Right-Click "Raw" button and click "Save Link As":
https://github.com/Merp/SubaruDefs/blob ... DH200X.xml
32BITBASE.xml:
https://github.com/Merp/SubaruDefs/blob ... ITBASE.xml

View of the changes:
https://github.com/Merp/SubaruDefs/comm ... b1e3cc1100

:mrgreen:

Bamofo · **Joined:** Mon Jul 02, 2007 11:46 am **Posts:** 430

Just want to follow up on this thread as feedback. I had built an 06wrx motor for my welder friend and the hot start with the GSC S2 cams was almost unbearable... you would have to wait a good 2 minutes before it would stop misfiring. After working with Merp on this he finally found the tables and with 3 simple setting changes the car starts amazing. I changed the following

Coolant
hot_restart_enrich_initial_high_activat_min_coolant_temp: from 174F to 240F
hot_restart_enrich_initial_high_activat_Air_temp: to 214F
Overall timer from some really large number to 1000 incase there was something missing on the definition.

Tested this multiple times and worked perfect.

Just need it on my 07STI now... A2UJ000J if anyone is interested

Merp · **Joined:** Thu Jul 23, 2009 5:46 pm **Posts:** 863

Added these to the A2UJ000J along with the alpha idle airflow tables posted by td-d.

Added some other roms, full list:
As of 9/3/12:
A8DH200X
A2UJ000J
AE5I500G
AZ1G101N
AE5I910V

View the xml here to copy/paste: https://github.com/Merp/SubaruDefs/blob ... UJ000J.xml

Download entire Alpha repo: https://github.com/Merp/SubaruDefs/zipball/Alpha

wrxt4cy · **Posted:** Mon Oct 01, 2012 3:56 am

Merp - thank you so much for getting these tables defined and creating definitions. Your Alpha defs are fantastic.

I finally had a chance to test this on my car tonight. I simply zeroed out the three enrichment additives.

I logged before and after. Before my final fueling base was shooting for 11.6 - 12.3 during hot starts and my real AFRs would get down to 11.1 - 11.5. Low enough to make E85 misfire pretty bad. After zeroing out these three additive tables, the final fueling base stays at 14.7 as do my AFRs.

I'll be testing them on a 07 STi that I'm tuning on E85 in a few days.

I have another customer dealing with hot start misfires as well. He has an 05 LGT - rom ID: A2WC510N

Could you dig up the definitions for this rom when you have some time?

Thanks!

td-d · **Posted:** Mon Oct 01, 2012 1:12 pm

wrxt4cy wrote:

I have another customer dealing with hot start misfires as well. He has an 05 LGT - rom ID: A2WC510N

Could you dig up the definitions for this rom when you have some time?

Thanks!

Will pull them out for you - have most of the single value parameters already.

RomRaider

Hot Start Enrichment Tables Found!

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