a year or so ago my santro had a problem, its whole electic system got shutdown, and we changed the ecu or whatever, the mechanice said to changed its "COMPUTER" and so we did, but after that the new problem arose still to this date that whenever i switch off the running car and then want to start again after 5 minutes or so, it wont start ........., it continously trys to start up but it wont ..... how should i explain the sound, its like when when at morning when its cold and engine wont start up but its some what different sound, its like the engin is not in sync with the system and once mechanic said to change its computer to genuine one, as the current computer is of some other vehical and i dont know where to change or get the computer of santro..... plz suggest me any good mechanic in rawalpindi area, who can understand the problem and honestly tell the corrrect solution or if who knows about this sort of problem, can let me know, would be helpful....... and yea after 15 to 20 mins it starts up, and there are no overheatin problems either