if you are happy with the performance of the car in it's stock form and just want some extra hop to it then NA bolt-ons seem to be the way to go. The general concensus seems to be Cat-back exhaust, Intakes, High flow cats and a tune. Don't skimp on the quality of the parts or the installation and you will most likely be trouble free if you take care of it.
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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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