[RG501]

ok, thats cool. how much HP will i gain from the Flowmaster muffler? will it be noticable? i just planing on buying the muffler, and not the pipes or tips or anything. cause i dont wanna spend 300+ dollars on a whole new exhaust kit including pipes and all that good stuff. all i really want is a good low sound. and if the flowmaster doesnt give me as much HP as a borla, then thats fine. just a good low sound is what im looking for. (without buying a new exhaust kit)