What's up? I have a 1997 Honda Civic Hatch CX..I got the car on a trade and it had an H23A1 in it...motor blew..found an H22A4..dropped it in the car and now am at a speed bump..I know I need to get a jumper harness in order to use the H22 ECU, but would not using the H22 ECU cause the car to not have any spark, or cause the motor not to run? I have the external coil, and know that it may need to be replaced..just trying to find out if the coil isn't it, would it possibly be the ECU? Your help and input on this would be greatly appreciated. Thanks..