What Brian said about the value of Dyno testing is absolutely true "peace of mind." I dyno every engine I build for my own peace of mind. While I rarely find any significant issues, I am able to find any small issues that might frustrate someone at the track or cause someone to miss out on some track time. It is also good to have a baseline so when someone is having issues at the track, we can test the motor and identify or eliminate it as the source of the problem. I have many people blame an engine when the chassis has a significant issue.