ok well i just got my 04 wrx and am going to do the intake silencer and two turns on my wastegate tomorow. Also i am giong to get a greddy type s BOV as my first mod. Also is there a performance gain if i put a sti TMIC on my wrx? will i gain performance? is it worth it? anyone do this? so how do these 4 things sound as of right now?