Do I have to build the nastiest Miata in history to even have a chance? I feel like I've put everything into this car and Bob still can't win this thing.. the best I can get is 4th... edit...9th place. The idiot spun out on the last lap.... UGH!
Which Miata are you using?
If you're using the newest Miata (Premium) and Bob is having near-death experiences, you over powered the chassis.
Start taking some (most actually) of the power out of the car. With basic ECU/cat/filter bolt-ons, weight reduction, sport suspension, and f/r aero, Bob should walk the competition.