i bought a JDM H22a and switch the ecu because the car needs inspection. drove around a little and now i have a CEL but when it passes like 5k rpm it starts to Flash. checked the codes and its throwing Random Misfire in all 4 cylinder.

anybody ever ran into this problem??

 

nobody has nvr ran into this problem?

 

Maybe an issue with coils? Or check all wire connection if this happened right after the swap.

 

ive had a few suggestions. so ive Changed Spark plugs and wires. cleaned EGR Valve and CEL still on.

 

Did you clear the ecu codes after the repairs?

 

yea. after each repairs i take the battery cable out for like a min than hook it back up

 

If the light comes when you start the engine, there is a good chance the codes didnt clear. And may have already fixed the car. But if the light comes on after the engine hits high rpm, I would look into more secondary ignition as the fault. Cap, rotor, coil perhaps?