Help Installing AFM Power Pipe

Ok, it is a pretty straight forward install. Just undo all the original stuff and replace with the power pipe. Cake. BUT it sends a template for you to make the opening in the fender bigger. Well guess what. There is a f*cking computer right there on the outside of the fender wall, right where the biggest part of the hole needs to be. WTF, the instructions dont call for any computer moving or anything. But the hole cant be made with it still there. What the hell am I supposed to do????? And its Thanksgiving Day so they wont be open again til Monday at least. And I need it on by Saturday morning because I am going to get my Meth kit dialed in and a new maf and all so I want this to be on there for the new tuning. What do I do?