2.4 = the least tunable car... enjoy it for as long as you can afford it and then buy a 1.8T / 1.9TDI... 2.5TDI is a stonking motor too, but not frugal enough compared to other TDI's for me to unreservedly recommend to all... if you can afford it, the 3.0TDI is the pick of the bunch (but B7 only).