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tuner ??'s

526 Views 4 Replies 5 Participants Last post by  RobertZX30859
I am just trying to figure this tuning thing out...so correct me if i'm wrong.
the flash tuner is a hand held scan tool much like the dtc reader that you plug into the diagnostic port and load preset programs into the cars ecu to change the way it controls the action of the eingine.
Now my questions are,
do you have to have presets loaded into the tuner or does it come with default setting??
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