Originally Posted by Casualvic
How much will stage 2 cost if I already have the 1
"Initially the upgrade kit will be available only to automatic F30s who have the pneumatic boost solenoid. You'll add a few wires to the harness and replace the control box with the new JB4 module. We expect to price it the same as the E90 N55 Stage2 upgrade @ $175.".
So there you have it, $175 upgrade from stage 1 to stage 2.
Delivered!: 2013 F30 335i M Sport, 8-speed Sport Trans, Estoril Blue/Coral Red, 403M, Premium Pkg, Dynamic Handling Pkg, Driver Assist Pkg, HK Sound, Enhanced BT & USB