At Inters on saturday and was speaking to the guy on the Tunit stall.He had his 170 TDi there, got to see how its wired in, basically plugged into the wiring harness by the engine(if you have one) then 2 wires connected to the battery, he says his 170 was actually running close to 180 on the r/r, he now says its doing 208bhp, which is nice.more info here
http://www.tunit.co.uk/index.php
http://www.tunit.co.uk/index.php