> I think the point here is that they're designing kits to target specific popular models so that much of the work only needs to be done once per model. I was

> I think the point here is that they're designing kits to target specific popular models so that much of the work only needs to be done once per model. I wasn't talking about type approval. In most EU countries (at least Germany and the Netherlands that I'm sure of) you need to pass through technical inspection if you modify a car. Especially if you change the fuel type or change the power output of the vehicle. > I'm sure they retain existing wiring and keep all the dashboard gauges working. Most gauges are no longer applicable (coolant temp, oil pressure, fuel level) or display the wrong range (the tachometer for instance).