Evo 10 : Ignition Timing: Upper/Lower bound

[bryan@GST]

With some help from some key people after finding out that the Evo 10 MR would not run lower than a certain ignition timing at WOT in key areas, we have found a very handy table for the MR.

Even more handy for people that only have access to 91 oct.

The Upper Bound Ignition Timing table for both GSR and MR look like this:



The Lower Bound Ignition Timing table for the GSR is on top, MR on bottom:



As you can see, very handy table to have with the MR as 14-17* from 6500 to 8000 can be a bit much on 91 with a larger turbo.

<scaling name="Min timing" units="degrees" toexpr="x-20" frexpr="x+20" format="%.0f" min="-61" max="61" inc="1" storagetype="int8" endian="big"/> 

<table name="Lower Bound Ignition Timing" category="Timing" address="50793" type="3D" level="2" swapxy="true" scaling="Min timing">
		<table name="Load" address="61348" type="X Axis" elements="21" scaling="Load"/>
		<table name="RPM" address="612fc" type="Y Axis" elements="16" scaling="RPM"/>
	</table>

	<table name="Upper Bound Ignition Timing" category="Timing" address="6078d" type="3D" level="2" swapxy="true" scaling="Timing">
		<table name="Load" address="60f78" type="X Axis" elements="22" scaling="Load"/>
		<table name="RPM" address="60f42" type="Y Axis" elements="23" scaling="RPM"/>
	</table>

[Evo_Kid]

Nice find.

[David Buschur]

You are the man sir, thank you for sharing that!

[jack_of_trades]

I wonder why they did this? Those are pretty aggressive lower limits, especially for a car that is supposed to be tuned to work safely with 91 octane piss gas in the USDM versions. They must really trust their limp mode to keep the boost from creeping into the dangerous timing areas.