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No worries on the questions man. Tuning a 2017 seems to be quite a pain just in general honestly. For 2017's, you have to pull your stock file using HPTuners and send the stock file to Magnuson. The problem though is pulling the file with HPTuners is cumbersome and time consuming. It fails to read it the first time and then it asks you to wait 30 minutes and then try again. I ended up having to link back up with my tuner the next day after we tried the initial read. It was just problematic. After that though, it was easy. You just have to hope somebody at your dealer has HPTuners to help you out. Takes 4 credits to unlock these 2017 vehicles. The tune from magnuson is just their generic canned tune. And yes, i am assuming any alterations to their tune will void their warranty but that has always been the case.
Yours being a 2015, it should be much easier.
The plan is to get it on the dyno this wednesday evening if there is a spot open. I will bump the thread once i get the numbers.