Other than the first 30 seconds after a cold start, my current setup is extremely quiet. There's no drone on the freeway and cruising under 80, it's virtually inaudible and road noise takes over (them RS3s...):
PTuning 4-2-1 EL header (catless)
Tomei overpipe
Tome straight pipe (hatless)
OEM catback
I no longer drive this car on a daily basis, so I'd like to save weight by ditching the OEM catback. Single exit exhausts would provide the most savings, but I'm concerned about sound levels. It seems like most single exits are obnoxiously loud
(Tomei would be out of the question). Among the dual exit options, the TRD USA and Q300 are not much louder than stock, but for a saving 5-6 pounds I wouldn't bother.
Any suggestions? I'd be getting a Driveways labs diffuser at the same time so I'm not concerned about the gap between the rear axle and the rear bumper.