Intermittent hesitation, code 44

When i'm at a constant speed, and after it has warmed up, my car will give a hesitation when I give it gas. It doesn't seem to do it while it's warming up, and doesn't do it every single time I give it gas. Also, it almost never gives a code, but the couple times that it has, it has been a 44.

i have replaced the O2 sensors and the fuel filter, as well has having run a couple tanks through with sea foam and its still doing it. Any ideas?