Like I asked before, give me some details as to the setup in the car, engine, turbo, transmission, spark plugs, boost level, and management. Thanks.
What caused the fuse to blow?
How much boost are you making?
Are you saying you just put in another ECU?
Do NOT do that. It will not help you at all. I’m not sure why you think it would.
This is due to the lack of a tune. a turbo’d motor doesn’t mean anything if you don’t have the proper support for it all (aka injectors/tuning)
I highly suggest that you dont start the car again until you have a better idea of whats going on. You are risking the motor by driving it if it doesn’t have a tune.