New Turbo Sound

[InFlames]

Hey, i just installed a 3" o2 elim, turbo back exhaust and when my turbo to boosts, it makes a different sound. It sounds kind of like a gym coach's whistle with one of those little balls inside that makes the sound pulsate, instead of the sucking air sound it used to have. (sorry if that was confusing) Is this normal? Anyone else have this after their exhaust installation?
PS- it still reaches full power and PSI

 

[L2RTSiAWD]

That's because it can spool faster and let out more exhaust gas. the sucking sound you only heard before was the intake