need help for a friend. heres the story, its a 98 gsr with uberdata p28. car ran perfect untill one day the car backfired and died. he changed the coil and the car started up but now when u give it gas it hesitates, bogs, and back fires but if u drive it normal it drives fine.... the only thing changed and touched was the dizzy. lmk what u guys think. thanks in advance

 

dont tell me nobody knows??

 

Could it be the fuel fump or fuel filter?

 

nope.