Small clarification to do before you make a mess, ? mod in 8-bit. And still on the 90 hp unless you have some major changes for me, can you? leave it stock since it does a little more? of 30 degrees from the original, different speech for the 70 and 75hp.
However, that ? the main map of the advances, then there are also correction maps. Unless you plan to map in advance in the starter which seems to me to be present, but I do not see reasons to change it.