Q Why can’t I edit certain values on some of the tables, such as the atmospheric pressure on the Boost Limit parameter?
This is a function of the 16-bit Subaru ECU and not a limitation of RomRaider. With some 2d tables, the y-axis is not stored as individual values, but as two data elements - a starting value and an increment. Therefore, the values cannot be edited. Regardless, the editing of these particular values are not typically useful in tuning.