Quote Originally Posted by snoopnole
--Patrick--05 Audi A4 QT, got a $5000 stereo but cant decide what to do to the engine first
you will enjoy a turbo back exhaust the most. An ECU will make the biggest difference and the two with a CAI will be you basic bolt on hawtness. Then prolly makes sense to do a FMIC. All this for 3-4K.