TUNING TOOLS

Holley Learn Table Applier

Paste the Base Fuel Table and the Learn Table out of Holley EFI software and this works out the best guess at what your VE table should be. Every cell that learned gets exactly its learned value and stays put, and the rest of the table gets fit around those cells. The one exception is an obvious spike, usually a spot where the base table already had a spike and the learn rode on top of it, which gets smoothed into the curve around it. One smooth correction runs through all the learn, so a big change at idle and a smaller one at cruise blend into each other in a straight line, the cells between learned areas get filled in, and past the learn data the correction levels off instead of running away. Then the dips and mountains get ironed out of everything around the learned cells, so every row and column reads like a real VE curve, still climbing with load and still carrying the torque hump your table had.

A cell that learned something way off from the cells around it gets left out and filled in from its neighbors. Everything runs in your browser and nothing gets uploaded.

  1. Copy the Base Fuel Table

    In Holley EFI software, select every cell in the Base Fuel Table and copy it, then press Ctrl+V anywhere on this page. The tool works out which table it is.

  2. Copy the Learn Table

    Do the same with the Learn Table. As soon as both are in, the tool runs on its own.

  3. Check what it did

    Flip between Before and After, or hit Highlight changes to gray out every cell that comes back the same. The Change tab shows how far each cell moved, and clicking a cell charts its row and column before and after so you can see the curve is clean.

  4. Paste it back

    Save a copy of your tune first, then hit Copy final table, select the whole Base Fuel Table in Holley and paste over it.

  5. Clear the learn

    Zero the Learn Table before you drive it again, otherwise the ECU stacks the same correction on top of a table that already has it.

You don't need to touch Settings to use this. Smoothness sets how hard the bumps get ironed out around the learn data, Smooth out obvious spikes can be turned off if you want every learned cell left exactly as learned, and Apply lets you put in part of the learn if you'd rather work up to it over a few drives.

Treat the result like any other tune change. Look it over before you drive on it, especially up high in load where the learn usually has the least data, and keep an eye on the learn and the wideband for the next few drives.