Port injector scaling

[Kodename47]

Originally Posted by ztan

You're on the right path. At the end of the day, that value is quite close and good for a base, but you'll have to dial it in for your setup.

2 Different values in RomRaider:

A01G Injector flow scaling at 0x10C6B4. Default .xml defines as "2707090/x" which displays as 222.32 - this is the value that you are working off above. I didn't touch this value

A01G Injector Flow scaling BRZ at 0x10C680. With scaling as per descriptor below (expression="x" to_byte="x" ; you see what the float value is stored in ROM): Stock value is 263.10, my scaling is 123.18 for DW450; 145.35 would run rich in my car at the top end.

 <table type="2D" name="Injector Flow Scaling BRZ" category="Fueling - Port Injectors" storagetype="float" endian="big" sizey="1" userlevel="2">
      <scaling units="ESTIMATED Flow Rate - Gas Only (ms/ml)" expression="x" to_byte="x" format="#.00" fineincrement="1" coarseincrement="10" />
      <table type="Static Y Axis" name="" sizey="1">
        <data>Injector Flow Constant</data>
      </table>
      <description>This is the fuel injector constant represented with an estimated flow rating (gas only). The underlying raw value does NOT represent the injector flow rate and there is no standard for measuring the flow rate of injectors. Therefore, it should NOT be thought of as a value that is going to exactly match published rates for your injectors but as a means to get you in the general ball park as a starting point to tune from.</description>
    </table>

Check your .xml file for the Injector flow scaling BRZ tag: yours may read [expression="60000/x" to_byte="60000/x"] which roughly approximates a cc/min value.

Most definitions use the cc/min value which is 228.05 for stock injectors.