Originally Posted by Bimmer-Bob
Is it possible to get one map for 93 octane and another for 91 octane? I use 93 as much as possible but am being transferred to CA at the end of the year (military), and I hear they only have 91 there. Anyway, I probably will only be there for a year, so I want the ability to switch back and forth (with the Simon, tool, of course). Or can the same tune be used for both types of gas? Thanks.
It is the same tune but on 91 oct the ecu will pull back a little.