At about 1k i put a air cai,then about 2k i put an LMS tune,then i started to get an itch for sound and went with Corsa Xhaust and PPE Downpipes and hardpipes from ECOPOWER PARTS and love the whole setup,all i have to say is every part from ECOPOWER PARTS IS exclusively and engineered,precisely for your vehicle,so support the forum.