My car is hesitating after 4k rpm during WOT after having my fuel filter replaced and I'm not sure if that alone could have caused it (done by dealer)

I didn't notice any excessive KR (I get KR ever since I got the GMS3 tune but never noticed anything wrong with it). Boost is constant at 14-14.5 PSI and no misfire when it is hesitating. I'm wondering what could be causing it to hesitate and since it happened after having my fuel filter serviced, I'm quite certain that it has something to do with it

And so far, no code is thrown, no limp mode

 

well your gonna have some air in the fuel line ... just give it a few miles ... let all the little air bubble clear out ..

 

Just to follow up on this issue. My car is pulling hard again after a few days and it is all normal again! Thanks for the advice!