Mark put high and low boost, plus launch plus anti lag, this means I now have 3 nice switches that will never be used apart from the time that I tested them to see that they work. If I take my car to prescot hill climb I expect I will use the pop / bang on the line as everyone does to show they have it and that is it....if it is in the ECU and the loom provides those wires then you may as well make them work? I guess I might put it in low boost if a friend drives it but 400 bhp and 468 bhp is probably just as much of a handful? I like the idea of a hidden "no boost" switch so that the MOT tester can move the car about without the temptation to rag it but I know the local testers and would egg them on to try it out on full boost.