Look at these:
The first one (Speed Buster) has the same increase of the kelleners (which costs about 1900€) but this one is much cheaper.
http://www.speed-buster.de/en/chiptu...ps/a-10109573/
The second one is the cheapest and it increases the power to 260 ps and the torque to 336 nm
http://www.dieseltuning.de/Tuning-fo...204_17297.html
Pretty nice, isn't it?