If you do not want to get booted. You can make a bunch of "different" passes and figure out what an all out pass would be...My car ran mid tens and it took over a year to get booted. Run the car to mid track and let off, drive the rest of the way. Then the next time roll the lights once green and sit there for a few seconds then make an all out pass. You will have sixty foot times on your half passes and then have 60ft to 1320ft times on the other passes,it's all simple math from there.....Then you can decide from there what you need to do and how much to slow it down....