Originally Posted by BrokenVert
You cant do that on an N54.
You hit the fuel delivery capacity of the car pretty quickly. People have been trying a supplemental port injection system, but properly tuning the port injection and direct injection simultaneously has proved to be tricky and most have dropped their development programs.
There also isnt a lot of room under the hood. I doubt you could fit bigger turbos, its all very tight on the bottom end. All of the current options are simply turbines that are designed to be more efficient at high boost levels. Or boring outs of the stock housing.
Speakng of turbos.
Whats the shelf life? 100K miles?
Whats the approx cost to replace?