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You don't mention your track day goals or experience. I will assume you are fairly new to the sport of high performance driving. As others have said:

The good news: Your Boxster was "Track Tuned" the day it rolled off the lot as new. Brakes, suspension and motor offer a great deal of reliable track performance without changing anything. It's a Porsche not a Honda Civic. Respect the racing heritage.

The bad news: Most of the Boxster aftermarket Hot Rod tuning and performance bolt on speed secrets that you see all over the internet are "greatly exaggerated" to be polite. They are extremely effective at lightening your wallet while offering little or no tangible performance gains (faster lap times at the track).

My suggestion is to get her up on a lift and do a thorough safety inspection. Make sure you have good tires, steering, suspension and brakes. Change out all the fluids and filters. Have a performance alignment done. Add safety gear like a helmet, gloves, fire extinguisher and roll bar extension if required by your local track. Run your car in stock class on street tires for the first year. Once you have honed your skills and shown your tail lights to the rest of the cars in stock class you will be ready to make full use of tuned suspension and comp tires. The really fast Boxster drivers in SoCal are running stock motors, tuned suspension and comp tires.


Have fun. Drive safe.