CBF8X-0001 – Smooth Power Flash Stage 1 Software for 2015-2018 F85 X5M & F86 2016-2019 X6M

Part Number: CBF8X-0001 Category: Tags: ,
(2 customer reviews)



Note: *This can ONLY be installed at an Authorized CarBahn dealer.
Click here to find your local dealer.

Calculated Flywheel Power:

OEM Stock:  598HP / 609TQ
Tuned 93 Octane:    731HP / 750TQ

Measured Wheel Power:

OEM Stock   515WHP / 523WTQ
Tuned 93 Octane:   628WHP / 645WTQ


  • Stage 1 Software $1000
  • Top Speed Governor Removed



Additional Information

Smooth Power Flash Stage 1 software for 2015-2018 F85 X5M & F86 2016-2019 X6M.


CarBahn software is designed to deliver the highest safe output possible. Smooth Power means software tuned correctly, not over-tuned. We always try to make a natural torque curve, not excessive torque at low RPM that falls off rapidly at high RPM. Excessive torque will break the tires loose, break the engine and drivetrain. Managed torque with a smooth delivery makes the car easier to drive thereby faster and more reliable. Most if not all our competitor tunes attempt to run too much boost, resulting in active knock corrections which causes surging during acceleration. CarBahn software also incorporates torque reduction in 1st and 2nd gears for manageable power delivery.


Most if not all tunes on the market except CarBahn reduce safety parameters in the software in an attempt to extract more power. These safety parameters such as knock control sensitivity, super knocking control sensitivity, and catalyst thermal protection are tuned into your OEM software to prevent engine and catalyst failure. When we reduced all the supposed power robbing software protections we lost less than 8 HP and 8 LB/FT Torque. We have seen many damaged engines as result of reducing these safety parameters! It hardly seems worth it for 8HP.

Doing it yourself:

A note on self-tuning tools. There are now programs available that you can buy to tune your car yourself. Many of these tools come with canned programs. Be careful as tuning a high output engine requires tremendous knowledge and experience to extract maximum power without damage.

Emissions legality:

A note on down pipes (removing the catalyst). We have run back to back dyno runs with the cat on and off and the power gain is much smaller than most people claim. We all need to breathe the air. Its difficult to get your car its required emissions test without catalyst and it’s illegal.

High boost with stock engine:

We have seen many damaged engines as result of making too much power with a stock engine. While modern engines are very reliable, it is easy to add large turbochargers and water methanol injection and break the engine. On the F8X, maximum safe power on a stock engine is 600 LB/FT flywheel torque. CarBahn makes high performance engines designed to handle more power. More information is available on this web site.

About Steve Dinan:

Steve Dinan has over 40 years of street car turbo experience. As an engine supplier we won 3 prototype racing championships and two overall wins at the 24hrs of Daytona partnering with Chip Ganassi Racing. No one know more about tuning high performance engines than Steve Dinan.


  • 2015-2018 BMW X5 M SAV
  • 2015-2019 BMW X6 M SAV

2 reviews for CBF8X-0001 - Smooth Power Flash Stage 1 Software for 2015-2018 F85 X5M & F86 2016-2019 X6M

  1. David Taylor (verified owner)

    Awesome Tune and great support highly recommend!
    X6M F86.

  2. Alex

    What an amazing tune!!!!!! Wow am I in amazement. This tune feels like it came from the factory!!! I’m glad gas is cheap right now because I’m going to be pedal to the floor all the time!!! Thank you to the team at Carbahn for getting this tune so perfect!!! Their relentless effort and work ethic is always top notch. I highly recommend this tune to ALL!!!

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