Originally Posted by jaceaholic
isnt the bmw performance like the stock one?? its just sf and a better filter right?? so i doubt it will have noise..
that is what i figured, the sound comes from the pipe leaving the filter going to the engine and the stock one has a silencer on it to muffle the car. but for $900 i mean, it is cheaper than group m but still i would expect more for that money and the dinan one is 500 so its just a huge mark up game