MES
Enthusiast
The only thing I would recommend is a 3" cat back for now. If you going to get headers (don't matter the brand) you will want to have a 3" exhaust system to maximize its effects.
For the most part exhaust mods will net you very little HP (10-15) without headers. Do it for sound or heat reduction rather than as a performance mod.
For the most part exhaust mods will net you very little HP (10-15) without headers. Do it for sound or heat reduction rather than as a performance mod.