That’s what was described to you above. Most racers will have 1 tune and not touch it but learn how it runs in the varying weather conditions. The AFR IS te key factor. If you wan to constantly change your tune up for what ever ratio works best then by all means do so. That doesn’t mean it will run consistently over and over again at the last and best slip shows.
Chasing what makes your car the most consistent also doesn’t mean it will be the fastest it can be. That changes on an hourly basis at the track.
