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When you get a tune via email for your SCT and you use the Extreme Tune software to upload it into the SCT it gives you the option of Customizing the tune. Do you need to do that to adjust for gear ratio, tire size, speed limiter, rev limiter, two step limiter or is that already part of the tune?
 

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Fleg said:
When you get a tune via email for your SCT and you use the Extreme Tune software to upload it into the SCT it gives you the option of Customizing the tune. Do you need to do that to adjust for gear ratio, tire size, speed limiter, rev limiter, two step limiter or is that already part of the tune?
Well, yes and no...... If your computer guy at the place that sold you the tuner knows ALL of the specs of your Mustang... Those parameters should already be in your tunes sent via e-mail.....

Now , if you change tire size, add a mod, etc etc.... YOU can actually adjust for it on the extreme tune software yourself and save that file!
 
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