modification for 520 E 90

[alextan318i]

Hi i am driving a 2006 520 and find it grossly under power and would like to do some modificationb to increase its torque and power any bmw friends out there can recommend good shop to go to.cheers

 

[weeheng]

install ess supercharger kit, 30-40% power increase.

 

[bmw7833]

It is e60 not e90.