HP gain from chip, 2.5 exhaust, cam, and k&n panel filter?

[PhillyG]

bmw in general makes a vary balanced approach to their cars. The eta is never gonna do much more in efficiency, as that is its goal. The "i" motor is never gonna make much more power without fairly serious mods, none of which will happen outside of the motor.

want more power? Prepare for serious mods.

turbo!!!! Moar powa.

[MazterDizazter]

I think it all goes back to the Turbo or M5x/S5x swap...