2001 C5 2.7t Random Loss of power when under pressure. Here is the Vagcom Codes
 

I am Losing power in 3rd gear at about 3500rpm only when I am stepping on it. I also lose power random whenever i step on it. Here are the vagcom codes
5 Faults Found:

17865 - Exhaust Gas Temp Sensor 2 (G236)
P1457 - 35-00 - Open or Short to Plus
16815 - Warm Up Catalyst; Bank 2
P0431 - 35-00 - Efficiency Below Threshold
16805 - Warm Up Catalyst; Bank 1
P0421 - 35-00 - Efficiency Below Threshold
16487 - Mass Air Flow Sensor (G70)
P0103 - 35-10 - Signal too High - Intermittent
17963 - Charge Pressure
P1555 - 35-10 - Maximum Limit Exceeded - Intermittent

I have a apr stealth catback and a awe b5 s4 downpipe cut and modified for my C5. I also have a b5 vast performance intake with heat shield. Giac chip