Hey guys. Back in January, I purchased a 2004 a4. When I bought the car, there was already magnaflo exhaust on it. Ive been thinking about getting my car chipped. I just don't know how to tell if it is a catback exhaust. Anyone know how I can tell? Thanks

 

check the pipe diameter. from the cat back and in the Y if you have dual exhaust stock pipe i think is 2.25 and 2