[Detoxified]

Recently bought my new M2C and finally hit 1200 miles. Since receiving my break-in service I am in the market for a new exhaust system since the current setup is not loud enough. I am looking for a Cat-back exhaust which will not show any CEL or OPF(?) Sensor issues WITHOUT a tune. Ideally the exhaust will be valved since I don't want to disturb my neighbors when I leave for work around 6am.

The systems I have considered thus far:
- Eisenmann Competition Valved System (not sure if center pipe throws any issues)
- Active Autoworke (my favorite sounding from the few clips all these exhaust have)
- Remus
- Milltek

Can anyone offer opinions or insight from their own exhaust systems.

Thanks!