01truebluegt

ok here is my deal i have a 2001 mustang gt with 70k miles i took it to the track and i ran a cpl good runs 14.2 then got a lil used to the track and ran a 13.8 ok good. but around the 4th run i hit the gas took of put in 2nd gear and bogged down and my service light came in. ok it was the 2 sensor in the front i went ahead and bought news ones also threw in a off road x pipe no cats so i got rid of my back sensor and put mils still bogging me down when i punch it. any suggestion on wht it can be. ppl tell me its the maf or something like that.. thanks for ur help