I asked the same question to Terry over on that other forum that deals with n54 technology.... he said the boost is only marginally increased, basically all the gains just come from more fuel. Not having an ignition system sure makes tuning easier!
I'm wondering if that can cause problems with too much soot overloading the DPF, but I'm sure there's some headroom engineered into that.
Anyway the 2nd gear launch is really how this car shines. It's kind of bizarre how the engine just goes to 2000rpm and stays there for a while, and you just feel the g-forces building. Definitely a different kind of power delivery but it's awesome!
2011 335d / Deep Sea Blue / Saddle brown / sport / premium
2008 BMW 135i / 6MT
2002 Z06 Corvette