I went out for my first HPDE with an instructor a month ago. My car is completely stock and my tires were, for the most part, bald and slippery. I flushed the brake lines, filled the tires to 36 all around, topped off all the fluids, cleaned everything out of the car and trunk, including the spare, and went for it. Man, it was a blast until I lost a valve stem and had to limp home. I had a little bit of brake fade/soft pedal but other than that the car did great. I was definately the limiting factor. I recommend bringing a small compressed air tank with you so you can adjust tire pressures to reduce tire roll and understeer, or deal with a slow leaker.
Since then I have new tires put on, braided brake lines are waiting to be put on, and I am waiting for Anthony's brake cooling kit to arrive. I'll get these on when I get back home and hopefully get another day on the track in July.
I'd start simple and find out what you need to go faster rather than trying to get your car just right. Make sure the fluids are good and it doesn't leak any out and just get out there and have some fun. You'll learn pretty quick that you need more practice before you are consistantly at the limits of your car's ability.
Since then I have new tires put on, braided brake lines are waiting to be put on, and I am waiting for Anthony's brake cooling kit to arrive. I'll get these on when I get back home and hopefully get another day on the track in July.
I'd start simple and find out what you need to go faster rather than trying to get your car just right. Make sure the fluids are good and it doesn't leak any out and just get out there and have some fun. You'll learn pretty quick that you need more practice before you are consistantly at the limits of your car's ability.