Highflow cat for audi a4 (b5)
 

i put a new magnaflow performance exaust and took off the resonator it sounds nice but it is very quiet and i don't want a fart can nise i want a low deep rumble when im idling and it does sound nice when i hit 3000 rpm-4500 rpms but anywhere else it is quiet as can be should i get a hig flow cat and comments and what can i do