As long as you get the lifetime tunes which I highly recommend they can customize to what ever you want. In other words I currently have a 91 oct street tune with shifting and fan temps modified. Many options and combinations are possible - for example I could have a 87 oct street, 91 race tune. Another example is, maybe I like my street tune for DD and may want:
#1 - 87 oct street
#2 - 91 oct street
#3 - 93 oct race
Any of the three what you want - SCT even allows you to name them. For example my #1 is "91 Street - version 6". Don't get hung up on the initial names of street, perf and race !
Now if you buy the NON lifetime tunes you pick the octane for each, #1 (street), #2 (perf), #3 (race) and that's it, one time affair.
Hope this helps.
Last edited by BillAz5.0; 01-30-2011 at 04:37 PM.