no not necessarily.. and on another note, exaust is more for sound, not for power... but thats not the point. if youre looking for exausts and arent sure whaere to start, may i suggest SLP loudmouths, flowmasters, magnaflows, and JBA. there are several more our there but this will get you started... hope this helps!
but daul exhausts are usually for looks, sound, and add a tad of power to, but its just one of those building blocks, for down the road, if u s/c you'll need the free flowing exhuast
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