make a 1.9tdi pd105 have a more throaty exhaust sound

[8900120d]

hi, im trying to make my 8p 1.9tdi have a deeper throaty exhaust sound, ive got rid of the back box, but it didnt really make any difference in sound! just made the turbo spool louder, im wondering if i get a sports back box can i get a deeper sound at low revs and idle? thanks