car is constantly stalling out with no codes thrown

nomodsjk

Car acts like its fuel starved at idle and low speeds but at wot runs fine. Im not getting any codes which is obviously the hard part. For those who arent familiar with my build i have the stillen sc plus their headers test pipes and cat back with a custom tune. This is really f-ing frustrating and embarrassing considering all the work thats gone into this build. Ive recently cleaned the tb's maf sensors and swapped out my k&n's for a clean set and did the manual idle air and throttle body relearn procedures. Before i did all the cleaning this problem was minor and i was always getting tge tps codes but now its major and no codes. Im getting tired of stalling out at every stop light or sign. Once the oil temp is up around 180 it doesn't seem to do it anymore