I want to get a tuning box for my Q7 but need some advice. Obviously there is the switchable tuning box which is advertised on this site but I have found the one below on good old Ebay for a fraction of the cost. Is it a case of too good to be true or is it worth a go? It is a supplier in Germany so you would have thought that these guys would know how to tune their native cars.
Any thoughts welcome.