hello hope someone can help got a my95 wrx import running 300bhp . when i accelarate its like ive got power then no power and so on but it happerns so quick its like having a unbalanced wheel on the car but from the engine . sorry only why i can discribe it . and its so gutless any ideas . ray

 

Duff Coil packs?

Had the spark plugs messed with recently (e.g service) and disturbed them?

 

ive put 4 new ones on with a full service im a mechanic done a lot of work on the car ie sixspeed .brembo conversion and so on . but this is really weird somtimes from cold it holds back on boost then it dont just seeing if anyone else had this happern