i'm not exactly sure how much of a difference you will see and hear with just a muffler swap....seeing as the stock muffler is pretty good as it is AND it's a turbo car. N/A cars tend to notice big change in sound with just a muffler. But neither F/I nor N/A cars will realize much of a performance gain with just a muffler swap. I would suggest waiting and doing a cat back system...just my 2 cents
