well i would say that your better off with the ap becuase it has been out already for the 06 and has been proven to give u great results. The utec is not as user friendly as the ap imo and is alot more expensive. It will prob run around 1000 bucks plus tunning. the ap comes pretty much with everythign u need for 645. A protune is usually 250-300 bucks or so which is still cheaper then utec. For your needs the ap is deffiantley a more logical choice.



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