going 100% SD- yes lean spot still there
turn off injector desoot mode- Mine has been off since I bought the car in 2015
It seems that it only has happened to a handful of us. However Jayrolla uncovered a few ctsvs on the dyno and right at 2600 rpms they go lean then go right back to commanded (post #482)
Here's what it looks like...ignore the KR this a very old snapshot of a log. Notice the maf and VE airflow is actually higher than DYN air at that point.
2600 rpm lean spot.JPG