ABS and Hazardous light comes on and stop car at 80mphs
 

Hey guys, I have a 2001 A6 2.7t. Giac chipped apr cat back manual transmission. It happens from time to time but when i step on it in 3rd gear the abs indicator starts to blink and then the hazardous light blinks also and it stop my car at around 80mphs.. Any clues or suggestions?

define "it stop my car".

"stop" meaning i can't accerlerate past it until, its like the car loses all compression. I then have to let go off the gas wait like 2 seconds and then it drives normal again.