Hi all
I just bought a 2005 bp5 legacy gt, its idling rough like a cylinder's misfiring, also rough when cruising at a constant speed, and seems to be running fine under acceleration. I've replaced air filter, air flow meter, spark plugs and coils, as well as putting an injector cleaner through. I've seen a few threads online of people with similar problems but no fixes that have worked for me.
Does anybody know anything else I should be checking/replacing
Thanks in advance