Diesel

BMW 4-Series F32/33 2013 onwards 420d PP remap

Standard this engine makes 200hp and 420Nm. Our STAGE 1 file takes it to 220hp and 440Nm.

+20horsepower
+20newton metres
2stages available

Where the power arrives

Power and torque through the rev range, on the STAGE 1 file.

Power before and after
0591191782381,0001,6252,2252,8503,4754,100 RPM 0591191782381,0002,0002,9753,975hp RPM
  • Standard 200hp
  • Remapped 220hp
Torque before and after
01192383564751,0001,6252,2252,8503,4754,100 RPM 01192383564751,0002,0002,9753,975Nm RPM
  • Standard 420Nm
  • Remapped 440Nm

Stages for this engine

Stage 1 needs nothing fitted. Anything above assumes the supporting hardware is on the car already.

Every figure for the 420d PP

FilePowerGainTorqueGainPrice
Standard200hpn/a420Nmn/an/a
ECOn/an/a440Nmup 20£520
STAGE 1220hpup 20440Nmup 20£620

Economy files show no new power figure because they are written for torque and drivability rather than peak output.

Remapping the 420d PP

The BMW 4-Series F32/33 2013 onwards 420d PP runs a factory calibration built to cope with poor fuel, skipped servicing and hot countries. We rewrite the fuelling, boost and timing for this engine on this car, then test it before you get it back. The original file is kept, so it can go back to standard whenever you want.

Diesels like this one gain most through the middle of the rev range, which is where you actually drive. It pulls from lower down, holds a gear on a hill, and needs fewer downshifts to overtake. Drive it the same way afterwards and the economy usually improves a little.

Figures on this page are for a standard car in good health. We read the fault codes and check the basics first, and if something needs attention we will tell you before we write anything. Have a look at the other engines on the F32/33 2013 onwards, the full 4-Series range, or everything we do for BMW.

Other 4-Series generations

Book your 4-Series

We write and test every file at our Aston workshop, on our own rolling road. Ring us with your reg and we will tell you what your car should make before you commit to anything.