Diesel tuning is big business. It’s bloody easy to get more power, better economy and a ludicrous hike in torque – compared to petrol motors.

German mapping specialists RaceChip have been making software-fettling products to unlock the potential of diesel engines for a decade and their latest electronic marvel, the Ultimate Tuning Box, is the most advanced yet.

It incorporates premium components and software optimised specifically for your vehicle – this clever bugger works on vans and SUVs too. They list over 5,000 applications for this device and many can control the system parameters and modes via a smartphone.

You needn’t go to a specialist tuner to get up to 30 percent more grunt either. Anyone with fingers can install (or remove) the box in minutes.

Price £345

For more info see BG Direct