wolverine8490

Ok, so I have been having an issue with my idle, and driveability. I keep getting KOER codes of 91, and 34. I am not worried about 34 as much as I am 91. I tested my old O2 sensors, and they appeared to not be working. I replaced them today, disconnected the battery for about 30-45 minutes. Fired it up, and still got codes 34 and 91. I have used 2 cans of carb cleaner, a can of brake cleaner, and a propane torch looking for vacuum leaks, and have found nothing. What else is there left to do. I have a brand new BBK FPR which I verified that I had 40psi with the vacuum line off. I ran the cyl balance test, and all I got was 9 twice. Is there anything else that could be causing the idle issue, the code, and the engine to studder with the gas held steady at about 15 mph. It feels like I am pushing on the gas pedal up and down.