cold start enrichment table

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May 31, 2008, 11:38 AM

#31

Jorge T

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I entered 744 in the start IPW table and it behaved the same as my open loop cold start setup settling down to14.7 quickly. The jury still out, it is very warm here in the morning

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Jun 1, 2008, 02:28 AM

#32

JoeBee

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Thats funny. I have just found the same map in my EVO 7 Rom. (But only one)
I am not ready to check this.
My loggings shows that the "add fuel" variable is count down after start.

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Jun 1, 2008, 10:56 AM

#33

JoeBee

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Here is the table for 9986002. The Values are not only timers, they are although the amount of enrichment. I called it only "units". So higher values means more enrichment that will be counted down to 0. The Word address of the variable (in case you will log it) is FFFF89A4 (to log it use FFFF89A5)

Code:

	<table name="Start Enrichment" category="Fuel" address="3922" type="2D" level="1" scaling="uint8">
		<table name="Water Temp" address="57b6" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

I have try this (250,250,250,250,130,26,17,6,6) values to overcome my starting problems with E85. It seems to work, but the temps here in Germany are quite hot right now (25 deg C).
OEM was:
Temp -32, -18, -8, 7, 20,34,50,77,82
Units 186,122,77,32,26,19,13, 6, 6

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Jun 6, 2008, 10:43 AM

#34

JohnBradley

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Any further updates? I just cold started my car after a month and a half on E30 and even then it wanted to run really crappy. Back to working on this project now.

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Jun 6, 2008, 04:43 PM

#35

JoeBee

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I have tested the starting enrichment table. Thats works fine for me.
There is another table (right before the starting table).
I think this is the enrichment when running, but I haven't tested this yet.
It is already quite hot here (and I love that).
I hope this second table solve the accel problem. The car starts and idle, but if you push the trottle fast, the AFR went to 20+ and the engine stopp until I release the trottle.

Both tables for the 99860002 ID

Code:

	<table name="Water Temp Enrich Starting" category="Fuel" address="3922" type="2D" level="1" scaling="uint8">
		<table name="Water Temp" address="57b6" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<table name="Water Temp Enrich Running" category="Fuel" address="3912" type="2D" level="1" scaling="Enrich">
		<table name="Water Temp" address="57b6" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<scaling name="Enrich" units="units" toexpr="x-128" frexpr="x+128" format="%.0f" min="-128" max="127" inc="1" storagetype="uint8" endian="big"/>

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Jun 6, 2008, 05:06 PM

#36

Jorge T

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changing the start IPW value to match the 14v in injector latency made my car cold start fine with no adverse effects in AFR at any rpm. No stumbles, coughs, burps or farts.

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Jun 6, 2008, 05:22 PM

#37

RazorLab

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Very cool, now to find the right tables for other roms.

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Jun 9, 2008, 05:19 AM

#38

JoeBee

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Which ROM ID do you need first?
(So you can maybe do the test for me

)

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Jun 9, 2008, 06:02 AM

#39

honki24

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94170015

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Jun 9, 2008, 07:37 AM

#40

JoeBee

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There seems to be a pair of two identical tables in the 94170015

Code:

	<table name="Water Temp Enrich Starting #1" category="Fuel" address="3732" type="2D" level="1" scaling="uint8">
		<table name="Water Temp" address="67BC" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<table name="Water Temp Enrich Starting #2" category="Fuel" address="3742" type="2D" level="1" scaling="uint8">
		<table name="Water Temp" address="67BC" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<table name="Water Temp Enrich Running #1" category="Fuel" address="3712" type="2D" level="1" scaling="Enrich">
		<table name="Water Temp" address="67BC" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<table name="Water Temp Enrich Running #2" category="Fuel" address="3722" type="2D" level="1" scaling="Enrich">
		<table name="Water Temp" address="67BC" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<scaling name="Enrich" units="units" toexpr="x-128" frexpr="x+128" format="%.0f" min="-128" max="127" inc="1" storagetype="uint8" endian="big"/>

No warrenty at all. I have only search the tables and have not dissasembled the whole routines. I have although not tested the "running maps".

Attached Thumbnails

cold start enrichment table-screen-00031.jpg

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Jun 10, 2008, 06:11 AM

#41

bnice01

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good stuff joebee

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Jun 10, 2008, 08:41 AM

#42

mplspilot

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Quote:

Originally Posted by JoeBee

I have tested the starting enrichment table. Thats works fine for me.
There is another table (right before the starting table).
I think this is the enrichment when running, but I haven't tested this yet.
It is already quite hot here (and I love that).
I hope this second table solve the accel problem. The car starts and idle, but if you push the trottle fast, the AFR went to 20+ and the engine stopp until I release the trottle.

Both tables for the 99860002 ID

Code:

	<table name="Water Temp Enrich Starting" category="Fuel" address="3922" type="2D" level="1" scaling="uint8">
		<table name="Water Temp" address="57b6" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<table name="Water Temp Enrich Running" category="Fuel" address="3912" type="2D" level="1" scaling="Enrich">
		<table name="Water Temp" address="57b6" type="Y Axis" elements="9" scaling="Temp"/>
	</table>

	<scaling name="Enrich" units="units" toexpr="x-128" frexpr="x+128" format="%.0f" min="-128" max="127" inc="1" storagetype="uint8" endian="big"/>

I'm a little behind on this thread here

...
Does the table Running enrichment) need bigger numbers for longer IPW to enrich more so the car doesn't stumble and go up to 20-21 afr like that? How much did you increase them by?
And can anyone do tables for 94170014 pls?

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Jun 10, 2008, 09:20 AM

#43

honki24

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Thank you Joebee, sorry but in your post did you mean that you have tried the startup maps? If so, what were your inputs and results?

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Jun 10, 2008, 12:59 PM

#44

JoeBee

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See my Post #33
I have try the startup maps (My EVO 7 has only one, you should change both).
The values I have tried for E85 in my car change my cranks from 6 times to 2 times.

The haven't check the canidate "running maps" yet.

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