[Roadkiller]

Found this on their website -- interesting numbers. I wonder if Dinan stage 1 will arrive somewhere between these claimed Ultimate and GTS numbers. The key to this much power is getting traction, which is exactly what makes the M550i xDrive so attractive. My math says this gets you to about 530hp / 600tq with a simply harness tune. And some might say the stock figures are underrated so the tuned numbers could be slightly higher.