Congratulations (new car).
No there isn't (warranty friendly exhaust).
But the FL cars do seem to sound a bit fruitier than the older cars.
Maybe you should have bought a Clubsport which is fractionally noisier than a regular GTI, or at least they sound that way from inside and with the Sound Rattle-ulater turned off.
Or better still a Golf R with Performance Pack.
Now
that would sound nice.