My impreza turbo has a flat spot when accelerating hard it is most noticable at around 3000 rpm.
it has done this since i got it back from subaru when my engine blew up due to a fault with the ecu.
has any 1 got any ideas. thanks.

 

knock sensor or spark plugs could easily be the problem

 

or maf,if none of these then possibly coil pack/leads.

 

there is a tiny hole hardley noticable in the air pipe just before the turbo after the maf sensor do you think this could have somthing to do with it

 

any vacuum pipe with a hole in will cause the car to run s**t,replace this first,its probably the cause!

 

thanks alot mate