Are the connectors making a good connection? When I first bought my car the little clips inside the injector plug on the harness were too loose to make a good connection to the injector. I know it's a long shot, but it only takes a minute to check. I haven't had misfires show up on the wrong cylinder, but I don't use an aeroforce either. I almost wonder if it's confused since 1 is right after 2 in the firing order?