My brother has a 97 civic ex 5-speed. Its only got i/h/e but it's on its second motor. The car has been acting up lately (hard time starting, and occasionally when it starts, a large amount of black soot comes out of the exhaust), the check engine light is on and when he got the codes checked, it said misfiring on cylinders 1,2,3,4 and an ecu malfuntion. My question is, can an ECU just go out? He's had this motor in the car for over a year and the chasis only has 76 k miles. Midas would want over a grand to fix it but if i know the problem could just be the ECU i know those can be picked up dirt cheap and installed. Or could he chip his existing ECU (OBD 2) and run uberdata and get it tuned to fix the problem? Thanks.