I just installed a BSH Race intake, I notice a difference in power but nothing substantial... it absolutely is more responsive though. As far as sound goes, I have only heard this and APR, and this one is definitely a bit louder. I must say that I was expecting it to be much louder though, I have had intakes on my old G37 that were insanely loud... The fitment could be a bit better, there is only one bolt that holds the ram air tray in position, I went to home depot and $3 later had some additional support rigged up.
Also, I am not tuned yet either. Not sure if this will have an effect on the sound ...
Also, I am not tuned yet either. Not sure if this will have an effect on the sound ...