Which aftermarket exhaust system would be best for increasing performance on a Toyota GR86?

I am looking for recommendations on an aftermarket exhaust system for my Toyota GR86 that will improve performance and overall driving experience. It's important that the exhaust has a deep, sporty sound but is also emissions compliant. Any suggestions?

I have had great success with the PERRIN cat-back exhaust system on my own GR86. It not only adds more power and torque, but also gives the car a deeper, more aggressive sound. Plus, it is 50-state legal for emissions.

I highly recommend the HKS Hi-Power Spec-L exhaust. It not only adds horsepower and torque, but also has a subtle, yet sporty sound. Plus, HKS is a trusted brand in the performance market.

I would suggest the Invidia N1 Titanium exhaust for your GR86. It is lightweight, high-performing and has a deep, throaty sound. Just be aware that it may not be emissions compliant in all states.