If it's running good as it is why spend the extra money to have it re-tuned. Did the previous owner give you a cable? That should be your missing piece.
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2009 370z Touring 7AT/AAM 2.5 true dual exhaust/AAM DE test pipes/z1 vqde35 headers/AAM cold air intake (R-line)/Motordyne M370/Quaife LSD/z1 brake upgd pkg/Swift Spec-R springs/WhiteLine Front&Rear sway bars with endlinks
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