A supercharger or turbo will add about 50% more power. A standard 1.3 is 63 kW. Standard 1.5 is 81 kW (109 HP) or 150 HP with a turbo/super charger.
If you squeeze a 2ZZ Corolla engine with 180 HP into an Echo you would notice more of a difference.
Other improvements recommended would be strut brace and coil overs and if you're really keen a Scion rear axle and trailing arms.
James