MR Turco

iTrader: (16)

He shoots he SCORES! Exactly what i thought, thanks again mrfred, you are teh man.

mrfred

iTrader: (50)

This table can be used in a couple ways. The most obvious way is to tweak the WGDCC values in the table. Another useful way is to very specifically tweak the TPS where upward correction is allowed to begin. This would be done by rescaling the TPS values. So instead of:

The values could be, for instance,:

And remember that, for instance, the ECU will linearly interpolate the Max Correction value from 0 to 10 as the TPS goes from 75 to 93 (in this example), so the max correction would feather up more slowly than for the stock value.

mrfred

iTrader: (50)

New summary for USDM Evo 9 88590015:

So in summary, here are three additional tables that could be useful in tuning the boost control system (for the USDM Evo 9 88590015.xml):

<table name="Max Total Upward WGDC Correction vs TPS" category="Turbo" address="3f10" type="2D" level="1" scaling="OffsetWGDC">
<table name="TPS" address="7284" type="Y Axis" elements="9" scaling="ThrottlePercentage"/>
</table>

<table name="Max WGDC vs Coolant Temp" category="Turbo" address="65d0" type="2D" level="1" scaling="WGDuty">
<table name="Coolant Temp" address="70f8" type="Y Axis" elements="8" scaling="Temp"/>
</table>

<table name="Min Load for Boost Control" category="Turbo" address="6688" type="2D" level="1" scaling="Load8">
<table name="RPM" address="6b98" type="Y Axis" elements="16" scaling="RPM"/>
</table>

Note that the "OffsetWGDC" scaling in the "Max Total WGDC Correction vs TPS" definition is one of my custom ones that is included in the "direct boost control" instructions. People not running my direct boost control setup can use "DynamicBoost" scaling instead.

There is actually another unpublished 1D table that defines the minimum temperature for the boost control system to operate. (The published one it ECUFlash is wrong.) Its a bit redundant since its purpose overlaps with the "Max WGDC vs Coolant Temp" table, but I'm sure the Evo engineers had a reason for the redundancy. :-)

mrfred

iTrader: (50)

https://www.evolutionm.net/forums/sh....php?p=5437646

bnice01

iTrader: (4)

what about tps vs load/psi for an ecu mod?

MR Turco

iTrader: (16)

We should see this with tephra's PID controller for boost control.

bnice01

iTrader: (4)

Oh ok thanks

fostytou

iTrader: (15)

I'm in version 1.34.1435 and this 1D table shows 85 degrees celcius originally.
Is this the one that is incorrect by default in openECU? I mainly ask because I set this to 80 degrees to prevent any limited boost under conditions i didn't want it and want to make sure I'm not wrecking some other lookup. This seems to be more along the lines of the Max WGDC vs Coolant Temp table.

mrfred

iTrader: (50)

Yep.

bnice01

iTrader: (4)

mrfred with tephra's v5 mod can you delete basline boost 2-4 and only use 1?

mrfred

iTrader: (50)

Yep.

MR Turco

iTrader: (16)

you had a baseline boost 4??

mrfred

iTrader: (50)

Many of the Evo 8 ROMs have four boost tables defined. From what I've seen, there are only two tables that are actually referenced by the code. The other one or two tables are left over stuff that are never called.

bnice01

iTrader: (4)

thanks mrfred

bnice01

iTrader: (4)

alright mrfred should be my last question LOL.

for tephra v5 all you have to do for the alternate boost if using direct boost control, is to change the scaling from load8 to psia8?

I also changed the name to "Alternate Baseline Boost".