Hi. New here. I have same problem. I have 2 codes. EGR , cuz it was deleted, and O2 sensors saying rich. However O2 sensors are good. I checked OHMS . I have an 03 GT roush clone. I bought it that way. Roots style/Eaton supercharger. 40lb injectors,CAI,New MAF. Fuel pump, 4.10 gears. It ran great after I got it. She was screaming. It had a vacuum leak that caused initial problem. I smoked engine and found initial leak. Still does this. Cold it's fine. Warm and when I try to floor it bogs down and will backfire. I let off a little and goes ok. I'm tired of trying to figure out. I should be blowing away other cars, but damn thing bogs when trying to floor it. It sucks cuz I want to hear my supercharger whine and I only get the satisfaction when it's cold.