new to this

Hi, Im in the process of losing my company car and selling my TVR T350c and want to order a white S3 man. I have driven one and loved it great fun but I would have to up the power a touch to keep me happy. What do you guys recomend to get 310bhp+. I have owned Imprezas in the past and without sounding like a chav I love the sound of open air filters to get the loud sucking noise. Any help would be much appriciated.

Thanks in advanced.

any thoughts on the AmD technik map? claiming 45-50bhp gains for sub £500