I have a USED BMS Powerbox for non-turbo e9X - $200 (SOLD)
Excellent condition, easy installation.
BMS Power Box (PBX)
125i 128i 130i 323i 325i 328i 330i 523i 525i 528i 530i X3 X5 Z4 630i 730i
MORE HORSEPOWER! & MORE TORQUE!
Plus Adjustable Throttle Pedal Re-Mapping for Snappier Response
for your non-turbo BMW
The BMS Power Box is a piggyback style performance chip for the BMW 2.5L & 3.0L N51/N52/N53 6 cylinder motors. It features easy installation and removal, gas pedal switching between 7 performance maps, throttle remapping for snappier response, and dyno gains of up to 10+ Horsepower and 10+ lb-ft Torque. Finally you can enjoy the car how it should have come from the factory.