For many, the 545i/645Ci is near the pinnacle of luxury grand touring from BMW. Not suffering from the maintenance challenges of later turbo engines, nor the downsides of high-strung M-models, the 545i/645Ci offers reliable, comfortable, sporty muscle in a gorgeous package.
That said, there's some room for easy improvement in how they perform and sound.
Magnum FORCE Pro 5R Stage 1 air intake system offers a CAD-designed heat insulated intake tube (and heat shield) with a high flow cone filter that outflows the factory intake by 75%. aFe goes as far as to show power gains of 7hp & 10lb/ft torque, although we love it even more for the intake sound it makes.
When pushed hard, the N62 is prone to increased coolant and oil temps. This robs horsepower and shortens component lifespan. The fix here is to install a low-temperature thermostat (90C) and add Redline WaterWetter to bring down temperatures and improve engine performance.
Last, but certainly not least, we include a Turner Motorsport at-home ECU tune. A full remap of factory calibrations, Turner's tune delivers improved throttle response and driveability, as well as power gains of up to 19hp, 15ft-lbs torque. All of this is accomplished while retaining factory emissions controls. The OBD tool, cable, and installation files are shipped to you with simple setup instructions. Files are exchanged with our calibrators via email, resulting in no downtime for your vehicle. There is no need to remove your ECU and ship it. You can have your N62 flashed from the convenience of your garage or driveway.
This Part Fits the Following Vehicles