I got an email from Bez regarding the speed/density patch. In it he discusses the accell enrichment function and gives new definitions for it.

This is for a 15 rom:

<data>Max_pulsewidth</data>
<data>idle_TPSRange</data>
<data>after_engine_start_addition</data>
</table>
</table>

<table name="Asynch_VS_TPSDELTA" category="Fuel" address="32b6" type="2D" level="1" scaling="uint8">
<table name="X" type="Static Y Axis" elements="9">
<data>0</data>
<data>1</data>
<data>2</data>
<data>3</data>
<data>4</data>
<data>5</data>
<data>6</data>
<data>7</data>
<data>8</data>
</table>
</table>

<table name="Asynch_TPS(Rpm) Limit" category="Fuel" address="32c6" type="2D" level="1" scaling="WGDuty">
<table name="X" address="6c26" type="Y Axis" elements="10" scaling="RPM"/>
</table>

<table name="Asynch_Accel_vsRPM" category="Fuel" address="32e4" type="2D" level="1" scaling="uint8">
<table name="X" address="6c26" type="Y Axis" elements="10" scaling="RPM"/>
</table>

Here is his description of it:

In addition to defining these tables, the speed density patch will allow for the GM IAT to actually compensate fueling based on temperature, add a 3D VE table and allow for wideband O2 input as a trimming source.

 

By the way, I don't know if somebody has already told this.
During dissassemble I find out that the table named "Boost Enhancement Enrich/Enlean (Anti-lag) Map" is used only in the ignition function.

It changes the ignition value from the high/low ignition map under some circumstances. (If a flag is set: I don't know when this flag will be set)

 

so are they making a patch to run speed density on stock ecu?

 

Yes, I was testing a patch back in october, but I lifted my head and blew the head gasket. I am currently rebuilding with a 2.3l and buschur head. Then I'll be testing the new version of the modified ROM and will release a how-to if everything goes well.

 

Good info! Possibly why on occasion I get -6 degrees retard breifly between shifts.

 

So, can that be translated into dummy? (accel enrichment) I know I'm having a problem with accel enrichment and my current changes aren't helping enough. Do you understsand what it is he was trying to say? I dont...

Also I assume the "15" rom you're referring to is a IX rom. I'd be very interested in 94170014.

 

if you need a tester i could do it for the VIII roms. as soon as i figure out my phantom knock issue. wat parts are needed etc.

 

Great news!

 

This is awesome! +1 on the need to test for VIII ROM's. 0011 would be nice! LOL

Josh

 

Any more updates, especially for 96940011 ROMs?

 

I'm intereseted in the 96940011 as well. That'd be awesome!!

 

Try this then

<table name="Asynch_Acell_Enrichment" category="Fuel" address="1254" type="2D" level="1" scaling="uint16">
<table name="X" type="Static Y Axis" elements="5">
<data>pause_period</data>
<data>min_TPSdelta</data>
<data>Max_pulsewidth</data>
<data>idle_TPSRange</data>
<data>after_engine_start_addition</data>
</table>
</table>

<table name="Asynch_VS_TPSDELTA" category="Fuel" address="2f7a" type="2D" level="1" scaling="uint8">
<table name="X" type="Static Y Axis" elements="9">
<data>0</data>
<data>1</data>
<data>2</data>
<data>3</data>
<data>4</data>
<data>5</data>
<data>6</data>
<data>7</data>
<data>8</data>
</table>
</table>

<table name="Asynch_TPS(Rpm) Limit" category="Fuel" address="2f8a" type="2D" level="1" scaling="WGDuty">
<table name="X" address="59fa" type="Y Axis" elements="10" scaling="RPM"/>
</table>

<table name="Asynch_Accel_vsRPM" category="Fuel" address="2fa8" type="2D" level="1" scaling="uint8">
<table name="X" address="59fa" type="Y Axis" elements="15" scaling="RPM"/>
</table>

 

BTW if anyone wants a different ID located I can probably find it the offsets and data are pretty straight forward to just dig through the rom.

 

I hope this is not a dumb question but can the asynch tables be used to help tune out my initial rich AFR dip when first going into boost under load (eg, going WOT in 3rd gear while cruising)?

 

This sounds more like an artifact of having lean spool disabled. Pretty common condition under tip-in with it disabled.