Originally Posted by Larry Brown
If you follow the recommendations above, your car will be capable of making the A main as is without further hopups. The key to going fast is tuning the car to the the track you run. This means adjusting ride height (you will need ride height adjusters if you don't have them), adjusting rear pod dampening via the discs and shock oil, choosing the shock spring that works best (you'll need a set of these as well), front springs, traction compound width on front tire, etc.
Most racers spend months to years to learn proper tuning. I suggest you browse this forum for any thread dealing with 1/12 scale cars regularly, and look for tuning guides to help you understand what each change will do. Rich Chang put together a very nice tuning guide, although I don't have the link. Perhaps someone else can chime in with that. That guide would be an excellent place to start your education.
Larry is dead on with his recommendations as usual. That car right out of the box is more than capable of winning and it's been proven many times. Learn to set the car up to be fast and practice. Being able to run 8 minutes without touching a board is better than any part you could ever buy.
Here is that setup information Larry spoke about, Rich has put together a great guide that's easy to use and understand.
Have fun with it,