In any from of motor sports information is the key to obtaining maximum performance. The ability to tell what you vehicle really did during the run, or possible dyno run is critical to knowing what to do next. What you perceived, and what actually did transpire is sometimes very different. The ability to look at critical elements is the way the pros make it look so easy to get to the next level. Just a thought, the data logger I use is on the web page I attached, its done by a guy that designed and market one of the big data loggers , before he sold out to auto meter . He is now building ones for the little guy small inexpensive and easy to use. For $ 395 you get engine rpm drive shaft rpm and soft wear to down load to a lap top. http://www.rpmperf.com/index.html