Deceleration Fueling / Overrun RPM cutoff threshold tables

td-d · **Posted:** Tue Mar 12, 2013 1:27 pm

NP, only a pleasure. Good to hear it sorted the issue out, useful little set of parameters these...

MFB · **Posted:** Wed Mar 13, 2013 10:37 pm

STI2NR wrote:

Thanks Merp and td-d for your valuable time. That fixed the issue I was having. A little help goes a long ways.

Hi STI2NR, what issue were you seeing?

alpine9000 · **Joined:** Fri Oct 14, 2011 2:40 am **Posts:** 34

AZ1G900C (Based on Merp's Alpha Base)

I have verified the resume threshold experimentally, works as advertised.

Haven't tested the other tables.

<table name="Overrun Fueling RPM Resume Threshold" address="ca67c">
<table name="Coolant Temperature" address="c7e20"/>
</table>

<table name="Overrun Enrich RPM Delta Activation" address="c7cd8">
</table>

<table name="Overrun initial injector enrichment (pulsewidth)" address="c7cdc">
</table>

<table name="Overrun Fueling Cut Counter RPM Threshold" address="c7d2c">
</table>

crippsdr · **Posted:** Sun May 26, 2013 11:19 am

Can someone find these tables for E2VG212E?
Thanks

CJohnson_STi · **Posted:** Sat Jun 01, 2013 5:07 pm

Needing overrun fueling for 08 Spec B (A2TB001L)
Thanks!

td-d · **Posted:** Sat Jun 01, 2013 6:56 pm

CJohnson_STi wrote:

Needing overrun fueling for 08 Spec B (A2TB001L)
Thanks!

Code:

Overrun_Fueling_initial_enrich C9990 
Overrun_Fueling_RPM_delta      C998C 
Overrun_Fueling_RPM_Counters   C99DC 

Overrun_Fueling_RPM_Resume_Threshold CB078 
Overrun_Fueling_RPM_Resume_Threshold_Y_Axis C9AA0 

crippsdr · **Posted:** Sun Jul 21, 2013 6:09 am

Hey can someone fill in my blanks

Overrun Fueling RPM Resume Thres = ??
Overrun Enrich RPM Delta Activation = c5fc8
Overrun inital injector enrichment = c5fcc
Overrun Fueling Cut Counter RPM Threshold = ??

E2VG212E

Thanks

td-d · **Posted:** Sun Jul 21, 2013 8:09 am

crippsdr wrote:

Hey can someone fill in my blanks

Overrun Fueling RPM Resume Thres = ??
Overrun Enrich RPM Delta Activation = c5fc8
Overrun inital injector enrichment = c5fcc
Overrun Fueling Cut Counter RPM Threshold = ??

E2VG212E

Thanks

Code:

ROM:00080890 Table_Overrun_Fueling_RPM_Resume_Threshold:.data.w h'10
ROM:00080890                                         ; DATA XREF: sub_33816:loc_33A4Eo
ROM:00080890                                         ; sub_33B30:off_33BFCo
ROM:00080892                 .data.w h'800
ROM:00080894                 .data.l Tipin_Enrichment_Disable_Throttle_Cumulative_Threshold_B_ECT_Y_Axis
ROM:00080898                 .data.l word_C7B9C      ; = 3.0e3
ROM:0008089C                 .float 0.1953125
ROM:000808A0                 .float 0.0

The overrun counters are not contiguous in your rom (I've seen this in some roms, legacies I believe). You will need to define them as single float values individually (couldn't remember if it's MT or AT):

Code:

ROM:000C6044 Overrun_Fueling_Cut_Counter_RPM_Threshold_AT_1:.float 1800.0
ROM:000C6044                                         ; DATA XREF: sub_334AA:loc_3353Ao
ROM:000C6044                                         ; sub_334AA:off_336D0o
ROM:000C6048 Overrun_Fueling_Cut_Counter_RPM_Threshold_MT_1:.float 1900.0
ROM:000C6048                                         ; DATA XREF: sub_334AA+84o
ROM:000C6048                                         ; sub_334AA:off_336C4o
ROM:000C604C Overrun_Fueling_Cut_Counter_RPM_Threshold_AT_2:.float 3000.0
ROM:000C604C                                         ; DATA XREF: sub_334AA+92o
ROM:000C604C                                         ; sub_334AA:off_336D4o
ROM:000C6050 Overrun_Fueling_Cut_Counter_RPM_Threshold_MT_2:.float 2800.0
ROM:000C6050                                         ; DATA XREF: sub_334AA+86o
ROM:000C6050                                         ; sub_334AA:off_336C8o
ROM:000C6054 Overrun_Fueling_Cut_Counter_RPM_Threshold_AT_3:.float 5000.0
ROM:000C6054                                         ; DATA XREF: sub_334AA+98o
ROM:000C6054                                         ; sub_334AA:off_336D8o
ROM:000C6058 Overrun_Fueling_Cut_Counter_RPM_Threshold_MT_3:.float 4500.0
ROM:000C6058                                         ; DATA XREF: sub_334AA+8Ao
ROM:000C6058                                         ; sub_334AA:off_336CCo

crippsdr · **Posted:** Sun Jul 21, 2013 9:42 am

Mine is MT.
I did notice that sequence but was not sure.
Thanks again.
Might help my stalling issues

wrxt4cy · **Posted:** Fri Aug 16, 2013 7:02 pm

I'm trying to get these tables found for AE5IB00V.

The main table I need is the resume threshold to turn bigger injectors back on sooner. I started with the known values for AZ1G202G since that STi rom is defined. I figured it probably shared the same values but I had no luck there. I found that AE5IB40V (the last and final rev for the 2011 USDM STi?) does have this table defined so I checked its values and was surprised to see they are quite different than any other rom's values from other years. The resume rpm is 200 at normal operating temp... that seems way too low. All other stock roms have always been set at 900 rpms. I was able to find the same values in AE5IB00V but I'm questioning if this really is correct before I try it out.

Can someone have a look and share their thoughts?

For AE5IB00V the table seems to be:

Code:

<table name="Overrun Fueling RPM Resume Threshold" address="CF00C">
      <table name="X" address="cc6b4"/>
   </table> 

fullspool · **Posted:** Fri Aug 16, 2013 8:01 pm

has anyone found the decel fuel cut parameters for the A4TF420F rom. I could really use them. It would be nice to keep decel fuel with negative in gear base idle timing so the decel fuel ignites in the turbo manifold to keep the egt's up during decel for better boost response. basically mini anti lag.

td-d · **Posted:** Sat Aug 17, 2013 8:23 am

wrxt4cy wrote:

I'm trying to get these tables found for AE5IB00V.

The main table I need is the resume threshold to turn bigger injectors back on sooner. I started with the known values for AZ1G202G since that STi rom is defined. I figured it probably shared the same values but I had no luck there. I found that AE5IB40V (the last and final rev for the 2011 USDM STi?) does have this table defined so I checked its values and was surprised to see they are quite different than any other rom's values from other years. The resume rpm is 200 at normal operating temp... that seems way too low. All other stock roms have always been set at 900 rpms. I was able to find the same values in AE5IB00V but I'm questioning if this really is correct before I try it out.

Can someone have a look and share their thoughts?

For AE5IB00V the table seems to be:

Code:

<table name="Overrun Fueling RPM Resume Threshold" address="CF00C">
      <table name="X" address="cc6b4"/>
   </table> 

td-d wrote:

Forgot to mention this - the format of the fuel resume table has changed in the more recent roms, from being a 'standablone idle' table, to being an additive table to whichever idle table is currently being used - e.g. as opposed to having 900 RPM at 80 deg celsius ECT, the table will have 300 RPMs (which is added to the idle target).

If someone feels like pumping this definition out in RR format (and any of the other alpha definitions), I'll start pushing most of the Alpha stuff out along with the new definitions I put out there. I'm locating the addresses in any case, but with the ease of Dale's RR scripts, I just don't have the time or patience to sit and manually code into the Ecuflash XML's.

wrxt4cy · **Posted:** Tue Aug 20, 2013 6:25 pm

td-d wrote:

Forgot to mention this - the format of the fuel resume table has changed in the more recent roms, from being a 'standablone idle' table, to being an additive table to whichever idle table is currently being used - e.g. as opposed to having 900 RPM at 80 deg celsius ECT, the table will have 300 RPMs (which is added to the idle target).

If someone feels like pumping this definition out in RR format (and any of the other alpha definitions), I'll start pushing most of the Alpha stuff out along with the new definitions I put out there. I'm locating the addresses in any case, but with the ease of Dale's RR scripts, I just don't have the time or patience to sit and manually code into the Ecuflash XML's.

Thank you!

I had missed that and it makes perfect sense.

harakka · **Posted:** Tue Oct 22, 2013 8:24 pm

Could anyone help me dig out these tables for 16bit -03 EDM STi A4RM000H? or point at right direction?

E85 tune, 76mm maf pipe, 1200cc injectors and I've diagnosed my part throttle problems (atleast part of them) to "tip-out" over rich condition..I can see gasoline AFRs in deep 9s just after throttle lift off. I've zeroed my Tip-in Enrichments and playing around in icy parking lot with on/off accelerator, out of boost, it just feels/and smells its throwing raw E85 out of tailpipe.. Just donated 30$ and reading/learning how to define adresses out of roms.

ride5000 · **Joined:** Thu Aug 03, 2006 2:40 pm **Posts:** 1934

fullspool wrote:

has anyone found the decel fuel cut parameters for the A4TF420F rom. I could really use them. It would be nice to keep decel fuel with negative in gear base idle timing so the decel fuel ignites in the turbo manifold to keep the egt's up during decel for better boost response. basically mini anti lag.

i've been doing this for a while.

don't expect any antilag effects, though the popping and gurgling is pleasant.

RomRaider

Deceleration Fueling / Overrun RPM cutoff threshold tables

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