Yanmar BY Series 6BY260
Change vehicle
248 hp
570 Nm

TuningBox Marine


Diesel Chip Tuning for Yanmar BY Series 6BY260 248 hp – Tuning Box - photo 11

+62 hp    +105 Nm

Diesel Chip Tuning for Yanmar BY Series 6BY260 248 hp – Tuning Box - photo 13 -15% fuel consumption

Diesel Chip Tuning for Yanmar BY Series 6BY260 248 hp – Tuning Box - photo 14 2-year product guarantee

Diesel Chip Tuning for Yanmar BY Series 6BY260 248 hp – Tuning Box - photo 15 Plug and Drive

Tuning Box Marine

We’ve developed a specific chiptuning unit to boost engine performance of boats.

These performance chips are designed specifically the nautical sector and with your needs in mind: significantly better performance (20-25% torque and power boost) and up to 15% less fuel consumption.


  • Latest software version, specifically for your vehicle
  • Injector optimisation for more precision
  • Engine Protect +
  • Adaptive Smart Sensor
  • High-precision 64-bit microprocessor
  • High-end AMP connectors
  • 100% watertight, suited to all climates
  • Resistant to dust, impacts and vibrations
  • Unit can be reprogrammed if you change your vehicle


  • Warranties & guarantees
  • 2-year product guarantee
  • Satisfied or your money back
  • Technical support
  • “Made in Belgium” quality

High performance powerchip.

Our Tuning Box Classic YA-BY-260 chiptuning unit will upgrade the performances of your Yanmar BY Series. You will have more power (+62 hp) and more torque (+105 Nm) with this diesel chip. The power of your diesel 6BY260 248 hp engine is increased by up to 310 hp* and its torque is boosted by up to 675 Nm*. Moreover, tuning the ECU with an electronic chip will cut your consumption off by -1L./100km*. 

This performance chip especially developed for this diesel 6BY260 248 HP engine works as a custom ECU remap. Thanks to the supplied AMP plugs, this tuning box can be easily connected and scrupulously respects the power reserves and engine protection systems of the nationality_ manufacturer.

Tuning Box offers a 1-year engine warranty with this power box.

Made in Belgium Factory Shop
engine warranty
product guarantee
or your money back

My dad wanted it so I ordered from Japan. My dad told me that it works perfect and highly recommended. We live in Japan and have Range Rover Velar. Dad said it takes about only 3 mins.

Totally happy with the whole process of buying. Clear and easy to use web site and a seamless transition to the payment site. Contacted customer service before purchase, quick and clear reply.

Hi. I tried many times over Xmas/new year to ring and chat with a person to avail. If this company Cannot contact people over this period let us know. I hope thIs product works. ***


Great Service, keep as it is and no improvements needed

Delivery speed is slow. More than week and nothing happens. If your process is slow you should give clear indication about that fact in confirmation. Setting expectation level is good idea.

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