The tune can be adjuated to run which ever octane you'd like. Shift points will be the same and the truck will still have noticably gains. It perfroms best with the higher octane but it's not necessary
-Jeff
-Jeff
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is there a way to have the tune be switched from 87 to 93 whenever i want?
would it be better to wait and get the tune after i have my exhaust installed or get the tune now and just have it changed when i get the exhaust? also does anyone think the live wire is worth it over the handheld tuner to get?