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well i blew the old zc and put a new/used one in but now i have this boggin problem. i get 2 or 3 paused blinks and 6 fast ones in the ecu. it starts up nornal then sometimes it makes little backfire, it runs good at the begining the motor feels good with power, but you can feel like if the air isnt flowing normal, suddenly it flows normal and check engine ligths up and the bogging beggins. i took the cat off and still the same. iget the ecu codes before the c/e ligths up.

 

did you check the plugs?