You won't see any real numbers unless you add a turbo or a supercharger.
I would suggest to keep it in Sport mode if you want more pick-up--and its free.
If you really need to drop some coin, go with a Magnaflow universal muffler to get an audible upgrade.
I would suggest to keep it in Sport mode if you want more pick-up--and its free.
If you really need to drop some coin, go with a Magnaflow universal muffler to get an audible upgrade.