Quote:
Originally Posted by ALF_E90
Do you get any improvements in noise/breathing for just swapping the filter out for K&N or similar? The quietness of my engine (330 not 335) is the car's most annoying feature for me. I don't want it to be chav central, but I would like some induction roar when accelerating hard, more like my Alfa V6's had. The GTA in particular would clear pedestrians off the road hundreds of metres ahead if accelerating hard even at low revs, but it was not boomy at all when cruising.
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Have you considered the BMW Performance Exhaust?