Your not going to get that much performance from a cultus unless you spend alot of money. By feel fast, i mean drive with a heavy foot but in a humanly manner. For example, to feel faster on my bike, i rev it high in low gears. That way, I'm having fun and I'm not going stupidly fast. Doing small things to your car makes it feel like you have a stronger connection with it. On my car, i have upgraded brakes and good tyres, also have done some interior mods. Exterior, nothing really. I play with the position of the air intake some times by slightly adjusting it, which makes it sort of louder.
P.S DON'T GO INTO THE WORLD OF RICE! Body kits and exhausts won't make it faster at all. Also, i hate when i see wings and spoilers on FRONT WHEEL DRIVE cars!