If you have a BMW 4-cylinder turbodiesel car, you might be interested in a new range of tuning kits for your oil burners straight from Munich.

The latest BMW Performance Power Kit released at Geneva early this year can bring the 184hp/380Nm 20d 4-cylinder N47 turbodiesel engine’s power output up to a nice 200 horsepower and 420Nm of torque, while fuel consumption remains unchanged. The 420Nm peak comes in from 2,000rpm.

Unfortunately for the 520d, it’s only available for manual cars at the moment, I’m guessing this is something to do with the 8-speed automatic as the 6-speed-equipped 3-Series doesn’t have any issue with the power kit on the automatic version.

For the 177 horsepower version of the 320d, the upgrade kit brings power up to 197 horsepower, with peak torque clocking in at 390Nm from 1,750rpm. The higher torque improves acceleration across the speed range, and it is claimed that highway acceleration time from 80km/h to 120km/h will drop by as much as 1 second.

Both these power kits are not just a simple remap – an uprated intercooler and a 600W radiator fan is required to maintain OEM reliability and is part of the package.