Honda CRF new Keihin ecu tuning

honda crf450 keihin ecu tuning 38770-MKE with tunerpro

Honda CRF250, CRF300, CRF400, CRF450 Keihin tuning using TunerPro.

honda crf450 keihin ecu tuning 38770-MKE with tunerpro

New TunerPro bin definition files (xdf) series for Honda CRF from year 2018 with ecu Keihin (38770-MKE-XXX, 38770-MKE-A52, 38770-MKE-D31, 38770-MKE-D42, 38770-MKE-D71, etc).

Supported motorcycles:

  • Honda CRF250R
  • Honda CRF250RX Enduro
  • Honda CRF300RX
  • Honda CRF400RX
  • Honda CRF450R
  • Honda CRF450RX Enduro
  • Honda CRF450RX Supermotard
  • Honda CRF450L

You can tune the most important engine maps with our bin calibration files (called XDF): spark advance, fuel by throttle position, fuel by pressure, rpm limiters.

Knowledge, experience, calibration studies and bench tests are the starting point for the development of the above mentioned maps.

A free chiptuning software combined with competitive prices (60 euro) are the milestones of our philosophy.

Through the definition files, the remapping software TunerPro identifies the engine working parameters which allow to obtain the maximum power and torque without affecting the degree of reliability.

TunerPro is a binary files editor, not able to read and write the engine control unit. To do this, you need an external tool. We don’t provide information about these tools.

honda crf450rx enduro 38770-mke tuning with tunerpro

Do you want to save money?

Buying our credit packs, you can save up to 100 euro.


Price for each xdf: 60 euro.

Supported vehicles are available in the main Bikes bin definition files area.

Read more about our Terms & Conditions.

TunerPro available maps

Please note: the maps listed may not be present in all vehicles because of the different software update and calibration numbers.

  • Fuel: main fuel table by RPM and Throttle, secondary fuel table by RPM and pressure.
  • Ignition: main spark advance angle characteristic map.
  • RPM Limiters.
honda crf250r tuning keihin 38770-MKE with tunerpro

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