So if I fit injectors, I would need to get edits to suit... Would I need the model etc of the injecotrs and see an "Edit" man, or are they available from somewhere else ?? I have heard the individual tunes done on the specific vehicle while on a dyno, not using a Capa, but directly programmed somehow are way better for performance as they take the specific characteristics of your car nto consideration. It there really much differance ?? I have also been told not to use Shell fuel. apparantly a dyno with Shell or a Dyno with any other brand equivalent octane is like chalk and cheese. Is this paranoia, or is there truth to it ??