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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sat Oct 06, 2012 8:05 pm 
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td-d wrote:
awdturbo04 wrote:
td-d wrote:
I'll dig them out for you.


That would be fantastic I can't wait to play with those tables. I am thinking about scaling by the same scalar that I modified my tip in by


Code:
Table_Overrun_Fuel_Resume_RPM:.
X axis C60E0
Table C6C14     

ROM:000C5FD0 Overrun_fueling_RPM_Delta:.float -17.0 
ROM:000C5FD4 Overrun_fueling_initial_enrichment:.float 0.0

ROM:000C6000 Overrun_Fueling_Cut_Counter_RPM_Threshold:.float 2000.0
ROM:000C6004 flt_C6004:      .float 2500.0
ROM:000C6008 flt_C6008:      .float 3000.0


Pushed to alpha branch on the romraider git!

https://github.com/RomRaider/SubaruDefs ... b93cf3ba7c

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sat Oct 06, 2012 10:47 pm 
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Ok so I used mrf582 code and put in my values. This is for the ecu A2ZJE11J and this is what I got

Code:
 
<scaling name="overrun" units="units" toexpr="x*0.1953125" frexpr="x/0.1953125" format="%.0f" min="0" max="255" inc="1" storagetype="int16" endian="big"/>

   <table name="Over run fueling " address="c6c14" type="2D" level="1" scaling="overrun">
     <table name="Engine Coolant Temperature" address="c60E0" type="X Axis" elements="16" scaling="CoolantTemp(DegreesF)"/>
   </table>

   <table name="Overrun_Enrich_RPM_Delta_Activation" address="c5FD0" type="1D" level="1" scaling="rawecuvalue"/>

   <table name="Overrun_initial_enrichment" address="C5FD4" type="1D" level="1" scaling="ms"/>

   <table name="Overrun_Fueling_Cut_Counter_RPM_Threshold" address="C6000" type="2D" level="1" scaling="RPM">
      <table name="RPM" type="Static X Axis" elements="3">
         <data>Low</data>
         <data>Med</data>
         <data>High</data>
      </table>
   </table>


and this is what I got
Image

Is this going to work? Im really new to this stuff, I have a basic understanding of mattlab but dont know what to look for here.


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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sat Oct 06, 2012 10:52 pm 
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awdturbo04 wrote:
Is this going to work? Im really new to this stuff, I have a basic understanding of mattlab but dont know what to look for here.


Yup, that's exactly what it's supposed to look like. Could have saved yourself the trouble and used the code Merp pushed to Github ;)

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sun Oct 07, 2012 4:08 am 
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Yup, that's exactly what it's supposed to look like. Could have saved yourself the trouble and used the code Merp pushed to Github ;)[/quote]

ya know I was playing with github and I must be using it wrong because I was only getting the locations without code


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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sun Oct 07, 2012 4:23 am 
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The Alpha definitions on GitHub use 'base inheritance'.

What this means is that the table 'skeleton' and the scalings are all in the 32BITBASE.xml file. Then any definition that uses <include>32BITBASE</include> can fill the 'skeleton' using the name/address.

The easiest way to use the github defs is to go to the branch you want (Alpha) and click the zip button: https://github.com/RomRaider/SubaruDefs/tree/Alpha

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sun Oct 07, 2012 4:18 pm 
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ok that makes a whole lot more sense. Really cool thing ya did there

So I have been trying to decide how I am going to go about editing this table for my larger injectors. My first step is going to be adjust the overrun fueling by my raised idle values. From what this thread and others have said this makes a large difference in removing the stalling issue.
stock rpm value against coolant temp for overrun fueling
2400 2400 2400 2350 2200 2100 2000 1800 1600 1500 1400 1000 950 950 950 950
stock idle values
1700 1700 1700 1650 1600 1550 1500 1500 1500 1300 1100 875 700 700 700 700
adjusted rpm value against coolant temp for overrun fueling
2400 2400 2400 2350 2200 2100 2000 1800 1600 1500 1400 1200 1200 1200 1200 1200
adjusted idle values
1700 1700 1700 1650 1600 1550 1500 1500 1500 1300 1100 1075 950 950 950 950

Next I would like to combat the rich stumble I get after lifting on the throttle by adjusting the "Overrun Enrichment" value by the same pulse width value that I took out of "Minimum Tipin Enrichment" in my head this would mean that the amount of fuel that is being inserted upon tip out would be made smaller just like what happened to the tip in value. The only problem with this is that this value is already at "0" so I would have to make this value a negative number? This doesn't make sense to me and am afraid testing this could actually cause damage.

here would by my methodology
____________original vehicle value__________formula_______________adjusted vehicle value
tipin enrich_______1.540(ms)_________(503.93/860cc/min)*1.540___________.902(ms)
overrun enrich______0(ms)_______________ .902-1.540__________________ -.638(ms) <--- proposed value note the negative


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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sun Oct 07, 2012 4:47 pm 
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General rule of thumb is to raise the RPM threshold for injectors to switch back on by roughly the same margin which you have raised base idle - so you're going in the right direction.

With respect to adding negative enrichment - I don't see anything in the code that restricts the enrichment to only being positive (and there are routines which do that, restricting values to between 0 and 1, for example).

That routine is pretty simple - the initial enrichment value is loaded to a floating register, injector latency is then added to it, and the final value passed back.

If you want to test, here are the Ram parameters that the values are passed to:

RAM:FFFF560C Ram_Initial_Overrun_Fueling_Enrichment

RAM:FFFF562C Ram_Final_Overrun_Fueling_Enrichment_Latency_added

The values in these, divided by 1000, will give you the pulse width in ms.

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Mon Oct 08, 2012 8:41 pm 
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Any chance i can get this for A2ZJ710J ??

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Tue Oct 09, 2012 8:05 am 
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Bamofo wrote:
Any chance i can get this for A2ZJ710J ??


Code:
ROM:000549E8 Table_Overrun_Fueling_RPM_threshold:.data.w h'10
ROM:000549E8                                         ; DATA XREF: sub_293BC:loc_2944Ao
ROM:000549E8                                         ; sub_293BC:off_294D4o
ROM:000549EA                 .data.w h'800
ROM:000549EC                 .data.l h'5BE00
ROM:000549F0                 .data.l h'5C950
ROM:000549F4                 .float 0.1953125
ROM:000549F8                 .float 0.0

ROM:0005BCF0 Overrun_fueling_RPM_Delta:.float -17.0  ; DATA XREF: sub_2904E+3Co
ROM:0005BCF0                                         ; sub_290C8:off_29124o
ROM:0005BCF4 Overrun_fueling_initial_enrichment:.float 0.0 ; DATA XREF: sub_2904E+54o
ROM:0005BCF4                                         ; sub_290C8:off_2912Co

ROM:0005BD20 Overrun_fueling_RPM_Counters:.float 2000.0 ; DATA XREF: sub_296C2:loc_29700o
ROM:0005BD20                                         ; sub_296C2:off_29754o
ROM:0005BD24 flt_5BD24:      .float 2500.0           ; DATA XREF: sub_296C2:loc_2970Eo
ROM:0005BD24                                         ; sub_296C2:off_29758o
ROM:0005BD28 flt_5BD28:      .float 3000.0           ; DATA XREF: sub_296C2:loc_2971Co
ROM:0005BD28                                         ; sub_296C2:off_2975Co

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Tue Oct 09, 2012 12:01 pm 
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Thanks td-d!

A27J710J pushed: https://github.com/RomRaider/SubaruDefs ... 2b9abfd040

I'll be adding the hot-start tables for it later today.

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Tue Oct 09, 2012 2:14 pm 
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No worries, thanks for pushing all this stuff to Github... I promise to learn one of these days :oops:

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Wed Oct 10, 2012 7:27 pm 
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Forester STI A2WC011E, tested, works.
Code:
<scaling name="overrun" units="units" toexpr="x*0.1953125" frexpr="x/0.1953125" format="%.0f" min="0" max="255" inc="1" storagetype="int16" endian="big"/>
<table name="Over run fueling " address="59BC8" type="2D" level="1" scaling="overrun">
     <table name="Engine Coolant Temperature" address="565E4" type="X Axis" elements="16" scaling="CoolantTemp(DegreesC)"/>
   </table>

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Sat Oct 13, 2012 12:17 am 
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^^ Pushed to GitHub as a partial def.

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Fri Oct 26, 2012 6:34 am 
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You guys might be able to help me. I have a 04 wrx and I'm trying to get decel pops (not anti lag but overrun pops like the SRT-4 get on decel.)
I have added some negative timing in the ignition advance idle above speed threshold from 1400 up but I believe that the IDC drops to 0 at 0 tps I'm wanting to keep them on but there's no definition for it in romraider or ecu flash. My rom is A4TF520F.

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 Post subject: Re: Deceleration Fueling / Overrun RPM cutoff threshold tabl
PostPosted: Mon Nov 12, 2012 1:45 pm 
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Hi Could I please get these tables for my ECU ID: A2UI000Z

I've attached the hex.

Thanks in advance.


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