So i have a stock 2003 a4 1.8t tiptronic and its in need of more power. I would like to eventually build up atleast a k04 but will probably go BT. I dont have the money to do everything at once so where should i start? I am thinking of starting with an exhaust/test pipe then moving on to an FMIC and eventually a k04/BT setup and tune. If exhaust is a good starting place then what are some nice exhaust systems people are running?
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