Originally Posted by K-A
I'm curious about this as well. I posted in the F12 Forum the question of what the N55HP has that's different from the N55 that gives it that little extra boost in power.
What I'm really curious about is how much REAL power it has over the N55, as the N55 is very underrated (at 280 RWHP putting it around 330-340 actual crank HP).
How are you calculating that... lol 330-340??? You add 10%-12% which puts you right at 310. Not arguing with the number just your calculation.
I am hoping to dyno my car some time next week or two - time permitting. Then I will throw on the stage 1 (If I can ever get it back from my deadbeat friend bigdeep) Then I will post some numbers.
BigD - I believe the answer to your question is going to be software. I tried searching for you, but everything just says "fine tuning" This to me indicates that perhaps it was nothing mechanical.
2013 535i Space Grey, Biege, M-SPort, Premium, Tech, Cold Weather, Luxury Seating, PDC, 6MT ED-10/11/2012 - PCD Redelivery-12/14/12