With tune on, during WOT I get a flashing CEL and engines power is cut and car is louder for few minutes then fine.
Codes are random. I sometimes get misfire cyl 2&3. Then that goes away and I get misfires cyl 4,5&6.
I replaced all spark plugs and injectors and coils on cyl 2&3 it's been 8 months.
Now it's either coils, injectors and/or spark plugs again.
Or maybe O2 sensors??
Or intake valves??
Or vanos solenoids??
Other symptoms are slight jerking while on low throttle cruising.
No problems with cold starts so fuel pump ok.
Went to dealer and misfires weren't showing on codes.
