Dyno tuning recommendations
 

I own a 2016 Corvette Z06 convertible with 16,500 miles. I know very little about Dyno tuning and am interested in learning. I would like to tune my vette to get the maximum production. I understand tuning takes the manufacture specs to their peak levels. However, I’ve been cautioned that excellent Dyno tuners are far and few between, to be aware most do not perform the Dyno process well and properly. I live in northern Illinois. Recommendations are welcomed as is any information to help me understand the process, what to get from tune, cost, what to know and ask tuner person. Guarantee of work?

Thank you very much for your assistance.