Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Audi s5 b8 2009 misfire cyl 1 idle › Audi s5 b8 2009 misfire cyl 1 idle January 13, 2020 at 2:54 am #895726 Paul LynchParticipant Hello, Did you get to the bottom of this? I have the same issue with my V8 RS5, misfire only at idle on cylinder 1!