still missing
 

right chaps, last week after a very cold night -4 i started the impreza (my99 uk spec car) drove it until the temp rose to normal then it started to miss above 3500rpm, changed the maf sensor and the o2 sensor, new injectors and fuel regulator plugs and leads are ok and no splits or cracks in any of the hoses any help would be great guys please.

coils