teamking

Travis-

So, what are your exhaust modifications? If it's just a cat-back, then you're legal (as others noted).

If your exhaust is legal, then I'd take the few minutes and put your stock intake back in and compete in A-Stock.

You won't be competetive your first time out. But you may get hooked and improve quickly. You'll pick up points that may help you out at the end of the season.

You may find there's a guy in a Boxster or Evo who's two seconds faster than you in your first event... and make it a goal to beat him by the end of the season...

124Spider

To repeat what others have said, it will be some time before you're competitive with the better drivers no matter what you do with your car. Autocross is a difficult and humbling game, and the class you compete in likely won't matter for a whole season (or more). Go to events. Get help from the top drivers (in our region, they're all willing to ride with you and often let you ride with them, and give you pointers). Learn. And, perhaps most important, see if spending the better part of a day for three or four minutes of seat time works for you.

If you decide to get serious, there's lots of years ahead to put your car back to stock.