BMW M5 / F10 Competition Engine Rebuild and Car Reprogramming

David Allenby
3 min readOct 28, 2020

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How I brought back to life my 2017 M5 Competiotion:)

My 2017 BMW M5 Competition

Hi everybody,

I just wanted to share with you my favourite project that I have done during this sad and strange time of Covid-19.

I am very passionate about fast cars/motorbikes and racing engines. It is what I have been doing all my working life, not only for financial return but for pleasure.

Here is my BMW M5 F10 2017 competition.

It had a complete engine rebuild, coding modules & reprogramming the full car.

The main problem with the car was water increase into engine — non runner!

We have pumped out more than 10 litres of water out of the plenums.

As a result it had seven bent con rods.

Engine is out, water pumped out
Fitting the engine back to the engine bay

So we have replaced:

  • Con rods
  • Pistons
  • Gaskets
  • Bolts
  • Rebuild the turbos
  • All bearings
  • Timing chain kit

In addition, one of the headlights was also drowned and required replacing & coding a new module to the car.

It showed more than 35 faults on our diagnostic and programming equipment initially. After engine rebuild, headlight module replacement we have reprogram the full car.

As it was a personal project during Covid-19 / moving the workshop we had to fit the engine back to the car on the driveway which was very extreme, but fun. It has been one of the most exciting projects we have done. The car is back to live, the engine is like brand new and I am a big fan of M series now after covering just over 4000 miles since this work:)

It is only a short article, but I just wanted to share with you my passion for great engineering,racing engines powered by petrol! As the progress goes on and sadly we will not be able to enjoy driving vehicles with Internal-combustion engines anymore. When you are driving a car with 600 hp you can physically feel the power of the engine. But they are still (in my opinion) one of the best inventions in the world!

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David Allenby
David Allenby

Written by David Allenby

Race engine tuning developing specialist of Race Engine Build Ltd