i have had some misfire issues on my truck and when I was looking into it I noticed that upon start up on a cold start my ignition timing goes to 12 degrees ATDC and will sit there for a few moments. Is there any reason that it does this? I figure it has something to do with warming up the cats but I was just curious which is why I’m asking. it goes back to firing BTDC after it is in drive and I start moving. It is on a 06 5.4l l, I can take pictures showing ignition time or anything else if more info is needed