What you're looking at
A fuel or ignition table is really a surface, but it's hard to judge its shape from rows of numbers. The 2D View takes one slice through that table, for example every load point at a single RPM, and draws it as a graph. Steps, dips and odd spikes that hide in the grid jump out straight away.
- The selected cell is highlighted in blue.
- A blue arrow shows where the engine is running right now.
- The left column tells you which slice you're viewing.
Editing from the keyboard
Move between cells with the arrow keys, and raise or lower the selected value with Page Up and Page Down. That makes it quick to smooth a slice while the engine is running, watching the curve change as you go.
The Output Value, and why it can differ
In the bottom-left corner, the Output Value shows what this particular table is contributing at the current operating point. It is not necessarily what the ECU ends up using. Corrections for temperature, air temp and other factors are applied on top, so the final number can be different. When you're chasing a mixture or timing problem, check the final output channel in your log too.
When we use it
We reach for the 2D View when smoothing a table after interpolation, checking that fuel rises steadily with load, or tidying ignition across the rev range. For a view of the whole surface at once, switch to the 3D View, and for plain numbers use the Text View. More on editing is in modifying tuning tables.
