[MRWILT]

I am getting some slight hessitation and stuttering between 2500 and 3000 RPM under moderate to heavy acceleration. I dont think its my HPFP cause i dont get long delayed startups and I just took my car to the dealership to get the fuel system cleaned. any ideas? I know whatever is wrong is minimal cause the car for the most part runs fine but its just not 100% and that irritates me. I can feel it but when they run it at the dealership and check the computer its not throwing any errors so they dont do anything even though the tech that rode with me could feel it.