That is the crux of the issue that has been debated ad nauseum. What is considered enough "evidence" to increase the weight of a car from what is derived by the process. And what we're really focused on here is power generation from the motor. Dyno sheets are really the only true empirical data we have to use. I seriously doubt people are going to give out their dyno data if they know the ITAC is looking for data to increase their car weight; despite all the proclamations of openness.

I say bring a dyno to the ARRC (and other big races if possible) and the top 5 in each class get put on it right after the race. There's your data and it could be kept confidential to the ITAC if desired.

Otherwise, it's going to be people evaluating an engine's architecture and guessing about how much gain can be made over stock. It's going to be educated guessing for sure, but still guessing and that's always going to cause some controversy. If we're ok with that then so be it. If not, then we have to get data somehow.

David