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It depends on what you want to do & what you believe you are capable of, If you are a do it yourselfer our software suite might be right for you http://www.hptuners.com/order.php
I have a 01 Z06 w/catback, Dynotech headers & VR-2B ram air. I track the car and do a few auto X's and do all my own work. What should I purchase to tune the car for now and any future additions. I have the lap top. Thanks, Rod