Coil Dwell on stock ECU...again

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Aug 23, 2012 | 06:03 AM

#91

EvocentriK

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Joined: May 2010

Posts: 500

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From: Australia

Using the stock values or the boosted values? Has anyone tried using lower values with individual coils to see where they need to be boosted to prevent breakup as a comparison to stock coils? Any data on the coils used by Spoolinup regarding dwell?

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Aug 23, 2012 | 06:18 AM

#92

240Z TwinTurbo

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From: Charlotte, NC

Quote:

Originally Posted by EvocentriK

For two of the common denso coils the link below provides accurate dwell information. The dwell numbers are the max you should use for the two coils.

https://www.evolutionm.net/forums/10352677-post276.html

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Aug 26, 2012 | 09:45 AM

#93

EvocentriK

Evolved Member

Joined: May 2010

Posts: 500

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From: Australia

I bumped up the dwell time on the stock coils a few notches (not as far as Aaron) as I was experiencing spark blow out at 26 psi with slightly gapped plugs. Massive difference, it holds 26psi fine now and feels much more crisp on 23psi, I'm impressed.

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Nov 21, 2012 | 07:21 AM

#94

RJSP

Evolving Member

Joined: Aug 2009

Posts: 229

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From: Lima, Peru

Are you guys bumping the 2800 rpm Dwell-Time reduction RPM to a higher value or just adjusting the Dwell-Time and Dwell-Time reduction factor tables?

What would be the address to log dwell-time with evoscan in an Evo 5?

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Dec 26, 2012 | 08:43 AM

#95

EvocentriK

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Joined: May 2010

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From: Australia

I just bumped dell time initially, but today I also dropped the reduction factor 1 notch also. dwell reduction rpm I have left stock at 2800 rpm

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Dec 28, 2012 | 03:42 PM

#96

dom11

Newbie

Joined: Aug 2011

Posts: 14

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From: Ukraine

Quote:

Originally Posted by merlin.oz

Here are some scripts to add to your xmls.
I have included the second correction, though I dont understand how it works at present.
I am confident on the scaling though, weird as they may be.





<scaling name="ChargeTime" units="mS" toexpr="x*0.064" frexpr="x/0.064" format="%.2f" min="0" max="16.32" inc="0.064" storagetype="uint8" endian="big"/>

<scaling name="BatteryVoltage" units="Volts" toexpr="x*75/1024" frexpr="x*1024/75" format="%.2f" min="0" max="18.75" inc="0.5" storagetype="uint16" endian="big"/>

<scaling name="CF256" units="Correction Factor" toexpr="x/256" frexpr="x*256" format="%.3f" min="0" max="2" inc="0.0039" storagetype="uint8" endian="big"/>

<scaling name="Percent128" units="%" toexpr="x/1.28" frexpr="x*1.28" format="%.0f" min="0" max="100" inc="1" storagetype="uint8" endian="big"/>

<scaling name="BattVoltDwell%" units="%" toexpr="x*75/1024" frexpr="x*1024/75" format="%.2f" min="0" max="18.75" inc="0.5" storagetype="uint16" endian="big"/>

<scaling name="RPMLimit" units="RPM" toexpr="7500000/x" frexpr="7500000/x" format="%.0f" min="0" max="9000" inc="60" storagetype="uint16" endian="big"/>



<table name="Ignition Coil, Dwell-Time" address="1229e" category="Timing" type="2D" scaling="ChargeTime">
<table name="Battery" address="2c7c8" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="10A46" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" address="122ac" category="Timing" type="2D" scaling="CF256">
<table name="Battery" address="2c7c8" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" address="122ba" category="Timing" type="2D" scaling="Percent128">
<table name="Battery" address="2c7c8" type="Y Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil Dwell Time" address="404e" category="Timing" type="2D" scaling="ChargeTime">
<table name="Battery" address="4f34" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1746" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" address="405e" category="Timing" type="2D" scaling="CF256">
<table name="Battery" address="4f34" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" address="406e" category="Timing" type="2D" scaling="Percent128">
<table name="Battery" address="4f34" type="Y Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" address="3e4e" category="Timing" type="2D" scaling="ChargeTime">
<table name="Battery" address="5aac" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1746" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" address="3e5e" category="Timing" type="2D" scaling="CF256">
<table name="Battery" address="5aac" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" category="Ignition Coil" address="3e6e" type="2D" scaling="Percent128">
<table name="Battery" address="5aac" type="X Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" address="41ea" category="Ignition Coil" type="2D" scaling="ChargeTime">
<table name="Battery" address="6398" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1746" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" address="41fa" category="Ignition Coil" type="2D" scaling="CF256">
<table name="Battery" address="6398" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" category="Ignition Coil" address="420a" type="2D" scaling="Percent128">
<table name="Battery" address="6398" type="X Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" category="Ignition Coil" address="41ea" type="2D" scaling="ChargeTime">
<table name="Battery" address="69bc" type="X Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil - Dwell-Time Reduction RPM" category="Timing" address="1746" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" category="Ignition Coil" address="41fa" type="2D" scaling="CF256">
<table name="Battery" address="69bc" type="X Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" category="Ignition Coil" address="420a" type="2D" scaling="Percent128">
<table name="Battery" address="69bc" type="X Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" address="41ea" category="Ignition Coil" type="2D" scaling="ChargeTime">
<table name="Battery" address="6808" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1746" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" address="41fa" category="Ignition Coil" type="2D" scaling="CF256">
<table name="Battery" address="6808" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" category="Ignition Coil" address="420a" type="2D" scaling="Percent128">
<table name="Battery" address="6808" type="X Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" category="Timing" address="3cc6" type="2D" scaling="ChargeTime">
<table name="Battery" address="6f14" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1346" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" category="Timing" address="3cd6" type="2D" scaling="CF256">
<table name="Battery" address="6f14" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell Time Correction 2" category="Timing" address="3ce6" type="2D" scaling="Percent128">
<table name="Battery" address="6f14" type="Y Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" category="Timing" address="3cc6" type="2D" scaling="ChargeTime">
<table name="Battery" address="6e0c" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1346" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" category="Timing" address="3cd6" type="2D" scaling="CF256">
<table name="Battery" address="6e0c" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" category="Timing" address="3ce6" type="2D" scaling="Percent128">
<table name="Battery" address="6e0c" type="Y Axis" elements="9" scaling="BattVoltDwell%"/>
</table>



<table name="Ignition Coil, Dwell-Time" category="Timing" address="35FC" type="2D" scaling="ChargeTime">
<table name="Battery" address="5F00" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Reduction RPM" category="Timing" address="1346" type="1D" scaling="RPMLimit"/>

<table name="Ignition Coil, Dwell-Time Reduction Factor" category="Timing" address="360C" type="2D" scaling="CF256">
<table name="Battery" address="5F00" type="Y Axis" elements="9" scaling="BatteryVoltage"/>
</table>

<table name="Ignition Coil, Dwell-Time Correction 2" category="Timing" address="361C" type="2D" scaling="Percent128">
<table name="Battery" address="5F00" type="Y Axis" elements="9" scaling="BattVoltDwell%"/>
</table>

Can you help with 88840017? Please!

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Dec 29, 2012 | 12:51 AM

#97

evodomUA

Newbie

Joined: Jun 2008

Posts: 34

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From: UA

Do we have any chance to open injector phasing tables on stock ECU?

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Dec 30, 2012 | 04:51 PM

#98

3gturbo

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Joined: Dec 2005

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From: Charlotte

I just added a cop setuo to my 2g what a difference it made changing these values.

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Dec 30, 2012 | 06:04 PM

#99

domyz

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From: Canada

Quote:

Originally Posted by 3gturbo

I just added a cop setuo to my 2g what a difference it made changing these values.

What is your new dwell time settings after the COP?
Which coil you have in your COP setup?

Beware not to overheat them from too long dwell time...

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Dec 30, 2012 | 06:23 PM

#100

merlin.oz

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Joined: Jun 2008

Posts: 824

Likes: 23

From: Sydney

There are no injector phasing tables in the Mitsubishi ROMs.

I have found the best way to combat plug blow-out when using the stock coils is to reduce the Dwell Time reduction factor. This keeps the same dwell time as stock at idle and rpm below 2800, so the coils dont overheat.

Reducing the factor makes the dwell time higher at high rpm. If the factor is set to zero, there is no reduction in dwell time, so it gets whatever is in the dwell time table.

The Spoolinup coils do seem to like a reduction in dwell time factor in my experience.

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Dec 30, 2012 | 07:44 PM

#101

domyz

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From: Canada

Quote:

Originally Posted by merlin.oz

Great, thanks for the clarification merlin. I just saw your updated XML and tables, thanks for the work.

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Dec 30, 2012 | 08:43 PM

#102

3gturbo

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From: Charlotte

Quote:

Originally Posted by domyz

What is your new dwell time settings after the COP?
Which coil you have in your COP setup?

Beware not to overheat them from too long dwell time...

i just used the 2g dsm settings. My cop setup uses the intrepid coils. I also zeroed out the 2nd table like the dsm ecu.

Coil Dwell on stock ECU...again-coiltime.png

Last edited by 3gturbo; Dec 30, 2012 at 08:56 PM.

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Jan 17, 2013 | 06:04 PM

#103

utripin

Evolving Member

Joined: Oct 2007

Posts: 133

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From: Seattle

Quote:

Originally Posted by merlin.oz

Tweaking the Dwell-Time Reduction factor table and logging the result will certainly get you there with minimal fuss, though the logged values do fritz arround a bit.

To help reduce the jittering (I believe caused by battery voltage changing) set the 12.89V, 14.06V and 15.23V settings (both tables) to the same value while experimenting.

The third table to me is looking like a maximum dwell duty cycle table.
I am confident the scaling is Percent128 though I dont know exactly what its doing.

Additionally, the 1D parameter befoer the rpm threshold is also involved somehow.
It is a time thingy equal to 60uS but unknown application/math.

Merlin, what are you suggesting to set the 12.89V, 14.06V and 15.23V settings too? Both tables??