Well if you wanted it louder then you should have gotten a different exhaust. But you can get a different intake, take out the cats, and change the exhaust manifold. which should leave you satisfied, maybe...
Or you can keep drilling holes in the exhaust til you are satisfied.
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Koni special active red, eibach pro-kit springs, Remus exhaust, stage 3 intake manifold,Stage 2 AA tune, BMW Short shift kit. Silicon intake pipe. M3 control arms front, M3 rear. ECS trailing arm with whiteline bushings. Purple powerflex subframe bushings. Yellow power flex upper shock mounts. Single mass flywheel OE weight.