So maybe i did not explain my idea fully,if my map readings are out of range i was thinking that could i use a map sensor from a v.v.c engine & adapt the wiring to the new map sensor.I at no point thought that i could cheat the e.c.u.I know that you can get used e.c.u's or repaired units but i am trying to save money due to a certain mr Khan extending the ulez zone to our area so the mgf will have to go.So thank you for your comments,but i thought these forums were a sounding board for people with problems that some others may have had or come across.