Originally Posted by elmariachi
Yeah i dont think there is official word on the db figure of the stock one. But i realise how much sound this S65B40 is capable of with just an exhaust mod like the ACS race. Its LOUD. I cant stop thinking how much louder it will be without the mid-cats and resonance box.
+1 on this... the M3's engine is capable of some loud noises with just a simple muffler swap... i got magnaflow mufflers on my M and i dont think i can live with a car that's any louder.