I need to sit in a G with Greddy or FI. I don't know understand how you guys can stand all the noise. I was already getting a little annoyed with the Tanabes but now I'm used to them. Can't imagine driving on anything louder.

 

straight pipes loll louder then both greddy or FI lol u can hear the car coming from 3 blocks down !! lol

 

^^^ agree with sam

 

+1 for greddy being the loudest of the choices.
however, i do feel FI and Stillen sound very similar in terms of "loudness" (if thats a word). Both sound good, so dont read it the wrong way, but considering price and install, Stillen wins