He's right, and normally they use those different maps for like Stock, 91 or 93oct, Race Gas or like Valet. 91 to 93 isnt going to make much of a difference at all.

Adam~

 

second that, the diffrence i doubt would be noticed at all. i only have 93 and 100oct programs, no sence in having stock with a K04 and i only put 93 in it, even before i had the chip. 100oct came as a special (second program free)