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2D Table Help
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Using 2D tables and features.
Buttons, right-click menu and Hot keys
Figure 1.1
1. - RPM is the X axis on your table
2. - Fuel Load % is the Y axis on this table, the Y axis will commonly be different depending on table purpose.
3. - These are the Y axis bins
4. - These are the X axis bins
5. - These are the Z axis cells
Changing X & Y "Bin" values and Re-Bin :
There are two ways to change the bin value:
Click on the X or Y header - To Change the bin this way open your table and click on the bin you wish to change, a “ Standard Input “ dialog will open, enter the new value for that bin and click “ OK ” . Now that bin has been changed but no cell values have been modified only change the value of the bin, it will not interpolate the values for the corresponding Z axis cells
Re-Bin Feature - The second way is to click on the button at the intersecting point of your X and Y axis ( See Figure 1.1 A-6 ) . This will open the “ Re-Bin Table” dialog, now make the changes to the X and Y axis bins that you need to suit your engine and click the “Apply New X & Y Values, Interpolate Z“ button at the lower right hand corner of the dialog ( See Figure 1.2 A-3 ) . Now your bin values have been changed and the corresponding cell values or Z axis values have been interpolate, allowing you to fine tune the trouble spots on your table without having to re-tune the whole table. Also keep in mind that if you decide that you do not like that changes made you can use the undo / redo buttons ( See Figure 1.1 A-7 ) on the original table dialog.
Why Re-Bining may be necessary :
All of the ECU
firmware for B & G
products interpolate the Ve values, this allows you to have fewer X
& Y
bins unlike ECU's that do not interpolate
the values causing a need for larger tables and consequently making
tuning of your tables more time consuming and less accurate. As you
start to tune your engine you
will see that you really only need bins where the engine demonstrates
a change from a linear direction. So having said that and also keeping
in mind that every engine is different, it is impossible to know what
the best value is for each X & Y bin when you start tuning your
engine. But as you
continue to tune your engine you will then key points along the X or Y
Axis that are deviating from the linear direction and require a "Pivot"
point to table values. You will be able to adjust your X and Y values to create these pivot points.
You can simply change the X & Y values to what you find more appropriate for your engine byt clicking on them and entering the new values that provide the needed pivot points. However, this will change your current tune in the process as the current Z values are no longer associated with the same X & Y values. This is where the interpolating feature really helps out, as you go through and change your bin values to smooth your map out for your engine the Z value or Cell value is interpolate so that any change made will provide you with a map that is as close to your old map as possible but with the use of the new X and Y values that will allow for a more accurate tune for your engine.
How to Re-Bin :
Figure 1.2
1. These are the X axis bins where you will enter new values and the corasponding Z axis cells will be interpolated.
2. These are the Y axis bins where you will enter new values and the corasponding Z axis cells will be interpolated.