Exhaust: When to upgrade?
 

In its simplest form, At what power level should I look into upgrading the factory exhaust. I want to keep the car as quiet as possible without choking the exhaust flow. I already have Tomei EL headers, but anything behind that is what i'm talking about.

I would like to keep the secondary cat due to emissions, since the tune I currently am using from Moto East isn't giving me a CEL.

This car will see a Kraftwerks C38 Supercharger kit at some point in the coming year, so i'm doing my research before hand.

Overpipe....that's the next purchase imho.

Keep Doing research

Next best thing would be to get a high flow catted front pipe. It'll give you the most power, considering you've done headers already. Car will sound meaner, and just a tad louder.