Just bought myself a Audi a6 estate 2.5TDI for a runabout and towing me caravan it is the 115bhp 5pot engine ( same as in the volvo 2.5tdi ) and seen these tuning boxes on ebay http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA:IT&ih=005 has anyone used one? And did it make as much differance as they say? Also how do they work as the way i read it they just plug in between the harness and the derv pump ( are they just like these cheap resisters advertised for petrol cars ) or do they really work? for the price i was thinking they might be worth a try....

Also if any tuners are reading this what sort of power and turque could you tune the car too...? And price please..( pm if you wish )

Cheers John..