Originally Posted by
gtstorey
I keep coming across people who say that they have over 100% AP (up to 255%) as being normal and not a problem? His latest log looked better, and it seems like his open loop fault is happening when he is getting a big mismatch between VE airflow and Maf/Dynamic (and this seem to be light throttle decel). This leads to it misfiring on 1 &4 and then OL-fault.
I think he has a tune that someone started (and maybe screwed up) and never completed. His problems started on his drive home when he first acquired the cobalt donor, so this is a car that has never really ran correctly.
Maybe I'm way off, but I'm trying to get the basic mechanical possible problems checked, but then it's a start over on tuning.