I have a Milltek catback. Which header would produce added power yet still have the note of the Milltek. Certainly I want to stay away from the horrid highway drone. There are so many brands now, and combinations thereof, soundoff please.

 

Milltek header would be a great match for your exhaust. Deeper note, small gain in HP.

 

I have a pretty loud Magnaflow exhaust, but I couldn't tell any audible difference inside the cabin when I added my OBX header with stock cat.

 

Milltek header will be louder than the stock header.

 

I had the milltek header with milltek catback on my 05 S. It was too loud for my tastes, so I put the stock header back on.