I don't agree at all. You can hear the engine and the change of pitch sometimes, but that is not always the case when racing with other people, and temps are actually more important than other data, and of course you can do something, that's why we have needles on the carb, unless you are running a carb without them with jets instead, and that's why a driver that can see and read that data will always beat your driver. Back in the 90s on ICA the best drivers in the world were not those with better driving skills, but those who could tune the engines while driving and play with the needles, and also give feedback to their engineers and mechanics, and I am talking about people like Fernando Alonso and Michael Schumacher. What I agree is that you do not need a thousand things, just the basics, like rpms and temps, otherwise it becomes a distractions instead of help, and I have used lap times a lot when testing or practice. I don't really understand how G-Forces and other stuff can help a driver without much experience. By the way I do have enough experience, and in fact i have not only raced for over 25 years, dirt ovals, sprint asphalt, road racing, 2 and 4 strokes, even a Wankel engine i own, and have tested for different teams to develop chassis, especially during my years in Europe, so i do know what I am talking about. Back on those days many of us didn't have a tach and survived, yes, but a simple Mychron 2 or 3 would have prevented many mistakes and make things much easier. If your driver can't change anything or adapt once in the track then it will be your driver who need help to understand some basics, again especially if using a carb with needles that can be adjusted, and there are many things you cannot see or feel from the pit area even if you use the tach data.Agreed. Once you're on the track, you got what you got. No need to make it complicated. If you need a tach/temp to tell that your engine isn't running right, you need more experience.