@kastlunger88 GTI is not a car, it stands for Gran Turismo Inyeccion, and peugeot uses the nomenclature since the 205GTi, 309GTi and so, VW used it for the Golf GTI in the beggining, but also ferrari used the GTI nomenclature.
The 308 are offered with 1.6 VTi 120 hp and 160 Nm admospheric motor; 1.6 THP 150 hp and 240 Nm both with 5-speed manual gearbox; 1.6 THP 140 hp 240 Nm with automatic transmission TSP 4 or 6 speeds. The GT with another engine: the 1.6 THP 175 hp and 240 Nm. - Twin-Scroll direct injection turbocharger with extra 20 Nm Overboost. The GTi is the one with the 1.6 THP 200 hp and 275 Nm. - Direct injection variable geometry turbocharger with intercooler.
No. That 1.6 THP 156 hp and 240 Nm engine is of the 'Féline' finish, which is used to eliminate the "turbolag", a Twin-Scroll and Overboost turbo. This GTi uses to eliminate the "turbolag", a Variable Geometry Turbocharger that generates 1.6 THP 200 hp and 275 Nm. In addition to an electromechanical system that increases the loudness of the motor recipients, when changes are made and accelerates (Sound & System).