chip-3door could you possibly explain how air-injectors work too? Nobody ever heard of those here, probably the only ones avalible were on early Grp A cars and those were always serviced by companies from abroad.
Oh..and do you know what kind of boost control is used on modern rallycars? I heard something that some of WRC cars don't even have wastegates, but even if they do, what do they use? SOme modern valves in a way of those on boost controllers?