What are the balancing rates and what should they look like while reading the Predator programmer if no problems are present?

Balance rates are a measure of how much fuel the computer is adding/subtracting from each individual injector in order to maintain a smooth idle. GM spec is +/- 4 in park and +/- 6 in gear. Balancing only happens at idle.

Thanks for the info, that's what I was looking for.