Originally Posted by rorkor
It does not make a lot of sound difference, neither do the euro or performance intake as they are closed systems. That said, closed systems are the best for actual performance in a BMW, for sound in the cabin, you would need an open system which some people have seen a loss in performance from. Either way, it is personal preference.
I have the common setup, cyba scoops, k&n with charcoal delete and like it for the price and stock appearance.
it is safe deleting the charcoal from the intake? how much money did you spend doing the charcoal delete, cyba scoops and the K&N filter?