The Comptech exhaust is not that loud, it has a low rumble and it kind of drone at constant freeway speed. Power gain is probably 5hp tops. If you don't care about the sound of your exhaust and want to keep the factory look, just stick with stocks.
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Comptech Icebox, Headers, Exhaust, Lowering Springs and Sway Bars. Mugen front grille. Inspire tailamps. MOMO Sport 18 X 7.5 +42 offset. Axxis Metal Master front/rear pad. 2 Polk/MOMO 10" subs, Orion Xtreme 500.4 amplifier and Alpine CD changer.