I have an 03 Touring with no mods at all except an Airhog stock filter. I use my car as a daily driver so I cannot afford to make it real loud as I also use it for work and I do drive quite a bit.
My question is, what kind of exhaust mods can I do to her so i can uncork some more hp without making it extremely loud? what has worked for you in the past? I am planning on getting a cold air intake and test pipes. Would it be enough with this? is the stock muffler that restrictive? Ihave heard that test pipes would be enough with the stock exhaust and a decent intake system.
Also, what is that muffler/cat looking thing right before the muffler? is that another cat?

Help!!!

 

If you dont want it that loud and are planning on keeping your stock cats... I would go with the NISMO Exhaust. It looks best on the car and has a sweet sound that is just louder then stock.

It is a full cat back exhaust system.

In California you can add DC Headers which are CARB Approved. They will not increase the sound of the car too much.

If youwere to change your cats to high flows or test pipes then the exhaust will get very loud.

If you are in CA and near us youare welcome to come by and hear the NISMO exhaust for your self