Do you pull it from both ranges? I think it showed 4-7 and 7-9 when I looked at it. Sorry I haven't used the tuner very much if you can't tell lol. Also when I put the 87 tune back on the car my speedo is way off and the gears wear different. I have 4.10 in it and noticed a 10mph speed difference.

Do I do this when it's connected to the car?

New here and need some help with my predator tuner. I have an 04 mustang gt and my tuner only has 87 performance and 93 performance tunes. My last mustang had a 91 tune that I ran but this tuner only has these 2 options. How do I get the 91 tune because I don't have 93 octane in my area?