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VF Engineering BMW (E63/64) 645Ci ECU Software

Pricing: $695.00


Designation: BMW E63 645ci | N62B44 4.4L V8 


How is HEX Tuning different from other products?

HEX Tuning is designed as a "full flash" tune, meaning the entire data area of the ECU is reprogrammed to create and sustain more power. "With great power comes great responsibility", safety MAPS are programmed into the tune to pull power if an issue occurs. Our engineers have control the boost, waste gate, ignition timing, and fuel delivery.

Our tunes are developed on "pump gas" 91 octane. Using 93 or 100 octane would only enhance the driving experience of your vehicle. Higher grade fuel allows for accurate time and ignition, cooler engine, and better performance.


ECU Tune  $695

increase HP

increase TQ

improved throttle response

Speed limiter removed

User Switchable

(HEX Flash cable included)


HEX Tuning is Expertly calibrated and extensively tested to provide noticeably improved throttle response with increased horsepower and torque, all while preserving your OEM like drivability and reliability. Why? - Because we can! HEX Tuning Performance Software can now be easily uploaded without the need to physically remove and open your ECU?s. Users can switch between Stock & Performance software using the HEX Tuning User Programming Tool without the need to revisit their local tuner. The entire process takes only minutes and produces generous POWER gains. Each power level is engineered to provide increased performance across the entire rev range by optimizing ignition timing, boost pressure, cam timing, throttle maps and many other calibration tables within the ECU to provide absolute functional synchronicity.


1. Select and purchase the appropriate power level for your car; on-line or though certified HEX Tuning dealer
2. You will be provided with a HEX Flash Cable and link Windows based HEX Flash Program, Install the program and appropriate drivers on to your computer 
3. Connect the cable to your vehicle and windows computer; use the HEX Flash program to read out your stock ECU file and email it to technical@vf-engineering.com
4. Within 24-48hrs we will send you back a tuned and stock ECU file, use the same HEX Flash program to load the tune on to your car 





Shipping Information

  • Item Requires Shipping
  • 1.5 lbs.
  • W6.0000” x H6.0000” x L6.0000”

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