i have been tuning back and forth with my 93 cai tune. i read live data for knock. so far car runs great with 4 deg adv 1-3.8k, 3 deg adv 4-5k, 2 deg adv 5-7k. thats with 91 fuel and i drive around 3500 to 2800 ft elevation. also run with shift firmness increased.:thumbsup: anyone care to share there modded tunes?