I got the advertised gain form the Lunati 200. In 1991 I put it in and went from 13.08 and 13.04@104 to 12.93@105.5. I did it over a period of two weeks. The first weekend I baselined the car, over the next week and weekend I installed the cam and drove it, on the third weekend I went to the track again. The weather was the same, it was in June in Florida and a threat to rain anytime on both weekends. The 13.08 and 12.93 runs were with near identical 60 foot times. Back then, it was my goal to run 12's in Saturday night street race trim, which for me was 93 octane, open dump pipe and Hoosier Quicktimes on.