Could be worse I guess: we could have TWO dips
BMW N51 3.0L with 3 stage (valved) intake manifold. You can see the two DISA switchover points pretty clearly. Red is stock Blue is tuned btw (i.e., the tune can’t fix it). Been doing a lot of old Bimmer research lately and they pretty much all look like this on a dyno. It’s hilariously consistent.