I did some thinking and I did it opposite from all the recommendations (I know, I know

)
I changed the filters BEFORE the purge
My logic is not to have all the crud from the filters being washed into the DP and re-circulated all over again. I did it when I saw that the primary (macro) filter was full of junk. And not knowing the history of the car, I assumed that the secondary filter was equally dirty.
DP never got dirty, but the engine IS running smoother now. 0-60 is 16 sec, down from 23 (Still faaar from norm but much better)
Im not going to say its a magic potion, car is maybe running better from new filters alone, but there is definitely change - its much smoother now, nailing is gone.