https://www.amazon.com/AEM-30-3300-1-Gallon-Methanol-Injection/dp/B00GSBKNF2I call it ‘’smart move’’ ,wchich AEM kit did you get ?
Got that one.
Please keep in mind I have a touring so the trunk mount was not an option if I wanted to retain my spare tire (which I do) and tool storage (which I do) so I had to find another option. The M5 sedan has nothing there but a fairly poor quality flat repair kit, so it makes more sense on the sedan.