I did a couple of pulls with my friend, he has a 2009 335i dinan stage 2 with dinan intake. I have n55 x drive 335i with jb4/dp/cp and intake... It was pretty dead even, now I am sure if he put in Jb4 and DP that I would get smoked.
2011 e90 KW V1, JB4, BMS Dp, BMS Intake, CP, Alpina Flash, ISO, E85
Coming soon to the garage: 2014 M3 Maybe M5