[mwd]

I've got an SCT SF3 tuner (actually I have two) for two different Mustangs. When I'm loading a custom tune, there is an option to "adjust options". When I select "adjust options" and various parameters show up for review, should I see the settings as they are currently in the custom tune or do they come up as default? If I want to change one setting such as rev/mile, does the custom tune take only that one adjusted option or does it take the whole list of adjustable options as seen on the scroll down menu?
I ask because the last custom tune I got for my 2006 Mustang was for 3.73 gears. When I went into the "adjust option", I noticed axle ratio was still checked as "stock". The rev/mile was also checked as stock when my tires are 235/55 R17 as stated in the comments section of my tune request. Is there a way for me to see the parameters that are resident in the custom tune before loading them into my car? Thx.

[JASonic]

if I understand your question right....yes, it will make everything on the menu true. I mean, it will take all the parameters listed and change them to the specified setting it shows. It wont just change one thing and leave the rest alone.

[mwd]

Thanks. Your answer sounds reasonable. If I just wanted to adjust one option, I guess I can't do that. That kind of stinks. What if I don't have any idea what the four different global sparks should be?...........and several of the other options? Thx again.

[Codeman]

if you have recieved a tune, i would not try adjusting spark, that is adjusting timing, and your tuner that made the custom tune has likely adjusted that to the most while still being safe. also you should be able to adjust single options in your custom tunes under adjust options.