That make us 535i owners look bad lol.
I have the Burger tune and an Exhaust too. But the max I am getting is 350hp. (probably)
It is impossible to get it to 500 ROFL.
2011 535i Alpine White, Oyster on black interior, Premium 1 & 2 Package, Magnaflow Full Cat-Back Exhaust, JB4 Stage 2