Still ain getting the idea of chipping does it take over from the ecu memory, completly replace it or just modifys signals? The bit you mention taking a car for service they update bits of the ecu without adding chips and things i foundout ford use something named ids or wds? Anywys can you sort of do what a bluefin do without a bluefin say if you had cables which will communicate from ecu to pc? im confusing my own head now