As ekona said make you sure get absolutely everything done - intakes, filters, plenum, manifolds, cats and exhaust etc before Uprevving. Power increases will be subtle along with throttle response benefits, but the noise will be epic and you'll have a sharp car to play with afterwards. Berk + Miltek is a good combo - no motorway booming but great rasp under WOT. Currently running Berk/Cobra on my 370ZN and it's much louder. Not necessarily a good thing for long motorway trips...