It isn't a matter of how much HP you can squeeze out of it. BMW has the I6 Turbo for more power, the new 2.0T is a fuel efficient replacement of the N52 I6 NA. If it's anything like the N54/N55, it is underrated and will really put out around 270-280hp at the crank. I can see Burger and Vishnu getting it close to the 300hp at the crank range with a piggy back tune as well.
2007 SLK55 AMG - Black on Gray/Black - AMG 030 Performance Package
2011 135i - Traded
///M-Sport - Dual Clutch - Harman Kardon - Bluetooth - iPod - Shadowline Kidney Grill - 225/255 Star Specs - Hotchkis Front Sway