Had mine set to these settings as i tried to race fundidora park, took me quite a bit longer to beat the AI this way...
AI Driver Strength="109"
AI Driver Strength Boost="9" // For the hardcore only - strength value added to in-game difficulty levels to make AI faster
AI Power Calibration="0" // Adjustments with AI strength (0=none, or add the following: 1=power, 2=gearing, 4=fuel)
AI Additional Fuel Mult="1.30000" // Additional fuel multiplier for AIs because of their driving style
AI Brake Power Usage="1.00000" // Fraction of theoretical brake power that AI attempt to use
AI Brake Grip Usage="1.00000" // Fraction of theoretical brake grip that AI attempt to use
AI Corner Grip Usage="1.00000" // Fraction of theoretical cornering grip that AI attempt to use
AI Max Load="40000.00000" // Maximum total load to set up theoretical performance tables
AI Min Radius="20.00000" // Minimum radius turn to set up theoretical performance tables
AI to AI Collision Rate="20" // Detection rate per second (1-40) for AI-to-AI collisions
Best of luck, just dont confuse US with the AI m8... we're the ones WITHOUT the flashing brakelights!
Woof ~ Woof