Back in 2000 I had a nitro rs4 a with a brand new os cv-r .12 ...so i break it in ...it ran great damn near perfect BUT for what ever reason I wanted to make it louder SOOO I drilled a few holes in my pipe :-/
It was louder
. ... But .. Well ... I'm sure you guys know what happen after running like that for awhile .. $120 bucks down the drain