(2 customer reviews)



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ByteTuner is a complete tuning suite for OBD2 BMW engine tuning.  Suitable for professional tuning shops and enthusiasts alike, ByteTuner provides all necessary functions to extract the full potential out of your stock vehicle or custom engine build.

  • Flashing through OBD2
  • Full map editing
  • Data logging
  • Checksum corrections
  • RSA signatures
  • Diagnostics
  • Flash counter reset
  • EWS/DME sync
  • Clearing adaptations


Supported DMEs

  • MS41.1
  • MS41.2
  • MS42
  • MS43
  • MS45.0
  • MS45.1
  • MSS52
  • MSS54
  • MSS54HP
  • MSS60
  • MSS65
  • MSS70
  • MSV70
  • MSD80
  • MSD81

Will it work with my vehicle?


We love mods

ByteTuner supports nearly any engine modifications depending on the application:

  • Forced induction (turbo/supercharger)
  • Larger injectors
  • Headers
  • Exhaust
  • Cold air intake
  • Engine swaps

Modified base tunes


Vehicle licenses

Are you an enthusiast with just a single car to tune? No problem! Are you a professional tuning shop with dozens of cars to tune? Awesome, ByteTuner can scale as you grow your business! ByteTuner uses a licensing system which allows you to tune each vehicle. For every vehicle you want to tune, a new vehicle license key must be purchased from our store.

Note: Although ByteTuner is locked to a single computer, additional software licenses can be purchased for $50 for each computer.  This is only applicable to the original customer and is not transferable. Contact Renovelo for additional details.

Purchase vehicle license


K+DCAN cable

Additional purchase required
ByteTuner is compatible with most USB OBD2 cables which support K-Line communication and BMW diagnostic protocols. It has been specifically developed to support the K+DCAN interface which is popular amongst BMW enthusiasts today. If in doubt, we offer compatible cables with our software which can be purchased during checkout by choosing the appropriate option above.

We’ve updated the firmware on our cables to provide faster communication and more robust performance. Our testing has shown a 28% increase in flashing speeds. This means less time wasted on the dyno waiting for a flash to upload. Additionally, the updated firmware fixes a critical bug in the original firmware. This bug has been proven to cause issues when flashing some newer DMEs which use the DCAN communication protocol (i.e. MS45, MSS60, MSS65, MSS70, MSV70, etc.). Using cheaper cables for these can result in a bricked DME. The stock firmware which is on every K+DCAN cable sourced from China has these issues.

Every K+DCAN OBD2 USB cable is tested to ensure it passes our quality standards before shipping it to you. Almost all sellers source their cables from China (including us!). Our experience has shown that we get at least one dead cable every few batches. Not all sellers can guarantee the quality of their cables, especially if they’re drop-shipping them from another supplier. We ship everything direct from our office here in the United States.


Record analog signals

Additional purchase required
In addition to the many OBD2 channels that can be recorded, up to 4 differential analog signals of your choice can also be logged in parallel! Monitoring your wideband air/fuel ratio, boost gauge or practically any factory or aftermarket sensor is now a reality.

We proudly support DATAQ Instruments DI-188, DI-1100, and DI-145 analog data acquisition modules which can be purchased separately on their website.  We’ve thoroughly tested these units and they meet our needs for signal quality, cost and robustness.


Tune comparison

Are you curious to see all the changes that have been made to a particular tune? Just open a reference tune and you can quickly see which parameters have been modified. This makes it very easy to focus on the important aspects of a tune to determine if it’s compatible with your setup. You never have to worry about knowing what was changed in a random tune downloaded from the internet again!

With a simple click of a button, you can transfer just the changes you want over to your tune. You can also transfer all of the modifications just as easily.

Additional information

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2 reviews for ByteTuner

  1. crash2191 (verified owner)

    I recommend this program for anyone. I found out my car was tuned before I owned it and it caused so many issues with using this. It was not there program it was the last tuner on my car did it incorrectly. I spent a couple of days getting my car back to normal and ready to be turned with these guys. They didnt have to but they took time to help me out and that is the best customer serves I could ever ask for. The program it self is easy to you and I can confirm it works with ms45.1. In short 10/10 will recommend

  2. Breant Gillard (verified owner)

    Highly recommend,very user friendly and best customer service I’ve had in a long time hands down🙌🤝💯

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