Originally Posted by ///M3THOD
Either way, our conversation is heresay until we see the cpacity of the turbos
Exactly. I personally don't think the BMW engineers are going to provide that much room for improvement with the stock sytem...like what they did with the F10 M5...but we won't know until people start messing with it. e85 conversion will likely provide the most gains, but who knows how long that will take before the first conversions are successful.