Thank you for replying. Let me address the shop, I should have from the beginning. They are not a Mustang performance shop. They are your standard mechanic's garage, who also happens to be a part of my family. Usually the at cost parts and labor works out in my favor, but unfortunately in this...
First, let me say thank you for taking the time to read through this. I want you to know that I have spent hours searching and going through the forums trying to find a solution.
I have a 2015 Mustang GT 5.0, with a Roush Supercharger package on it. I bought the car with everything already...