| BMW E31 840i 4.0 |
 Your BMW 840i E3 1 4.0 utilizes a plug-in plug-out chip (EPROM). Fitting is simple and the Powerchip can be installed in about 30 minutes with basic skills and equipment. To install the upgrade software, simply locate the computer and un-plug the standard chip. Place the Powerchip performance chip into the socket and insert fully. Then, close the computer, re-install into the vehicle and start the engine to fully complete the installation process. In standard form, the 840i E3 1 4.0 produces 282 hp and 295 lb.-ft. Powerchip has a range of chips to suit your car, which can increase it's power to between 293 hp and 296 hp, and it's torque to between 309 lb.-ft and 312 lb.-ft. Price: 395.00 |