Hi there,
I just installed the Civic security system in a 2005 hybrid (be careful when pushing that white-wire pin into the green connector-- make sure it's the right slot!).
Anyway, you have to disconnect the negative lead off the battery, then when done reconnect and you need to perform an "ECU idle learn" procedure. Basically run the engine at 3000rpm with all electrical accesories off , when the engine fan comes on let the car idle for total of 5 minutes. I did this (well in excess of 5 minutes BTW). Now I get the feeling that my mileage has dropped. I need to get more miles driven to verify, but does anyone know about this ECU learn thing? Could this cause a mileage drop? If so, what do I do?
Thanks for any input

Peter