hi guys...new owner of the st170 so basics to start with.

cars as standard as far as i know..wot ways are there to gain any performance increase or sportier sound without delving deeply in the pocket? (just yet anyway,buying the cars broke me..lol)
i know i can change exhaust ect...but in time i think...anything cheap and chearfull to start with?
took off the resonator box from next to the airbox to gain a slight sound difference..its ok to use the car like this isnt it? cheers all