Help

[babydave112]

I am in need of help to find out what the fault is on my 1998 Subaru impreza. The engine check light is on, I have changed all the cheap parts before getting some more expensive parts. I have replaced the maf sensor, spark plugs, ht leads, coil pack, idle control valve and the throttle position sensor and still have no clue why the engine check light is on. The car is struggling to idle and runs like it has a miss fire, as it is on a apex ecu I can't do the flash code ontge engine check light any one know what it might be or in the wantage area an wouldn't mind having a look at it