remember that it's a turbocharged car...the turbo will "deaden" of lot of noise through the normal operation (the exhaust gases spinning the turbine) - those noises would otherwise pass straight out of the exhaust
No turbocharged engine will ever sound the same as a supercharged/normally aspirated engine
Perfectly normal...if it's extra noise you are after, why not try an aftermarket air intake, such as the Oettinger/Carbonio, and once run in, swap the exhaust system for a Miltek or similar?