I have recently installed the DiabloSport 93 octane tune on my 03 Mach 1. The only performance upgrades I have is a ram air intake a mac h pipe and magnaflow catback. My question is, I have the interface kit and would like to get more power. Would it be worth my time with the little upgrades I have to get a custom tune. Also where should I get the tune, what would it cost me and how would I install it. Thanks for looking. Any help is appreciated.