Technical Does anyone know if the cam profile is changed on newer JTD Multiplas?

[MultiplaAbarth]

I'm sure my old JTD105 drove nicer at low revs than my newer 115ELX, torque'ier etc I just thought Fiat just upped the "BOOOOST" a touch to get 115BHP, however this one seems a lot faster at mid to high revs.
Would fiat have changed the cam profile on a Turbo?, doe anyone know?, interested even.......