First time here and already loving it...I just purchased a new Mazda 6 V6 fully loaded...18 inch wheels, leather seats, fog lights...well you name it...Quick questiuon though...Where should I start if I wanna squeeze more power out of the engine? Intake? Exhaust? I'm also worried about warranty voids with modifications. I'm not a go fast kind of guy, but i'm a car enthusiast and at some point would like to take it to a dynno and also a track to see how it performs. Suggestions?