I have a 2013 gt with the 6 speed auto. I have the c&l racer cai BBK cat deletes and magnaflow axleback race mufflers. And 4.10 gears. When i got the CAI It came with the Bama rev x tuner and 93 race tune .car ran great for about 2 weeks then all of the sudden it lost a ton of power and torque. Its like its starving for gas . sometimes it will clear up but just until i let out of the throttle then its back to bogging. The cel light will blink about 5times then stay on til i start it then it goes out. A couple of times it has came on while driving the code was p1602. 420 430 then i had the car on the dyno yesterday for amother tune after i drove it it threw a 605 code .ive replaced the coilpacks the plugs the MAF SENSOR THE IAC . I dont know what else to do . im tired of guessing at it. Im leaning towards a bad ECM or bad fuel pump . any thoughts or anyone else ever have this happen. ? Oh the car makes 485 hp but its running like its only got a 100 !! Very frustrated please help ? Thanks