ChiptuneMAP
ChiptuneMAP/BMW/X4M/40d - 340ch
BMW

40d - 340ch Tuning

BMW X4M: detailed power and torque gains by stage.

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Stage 1 for your X4M: garage prices

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Gains by stage(2)

Power

340 hp

Torque

700 Nm

Diesel
Power
340→400hp
+60 hp
+18%
Torque
700→800Nm
+100 Nm
+14%
OriginalTuned

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Tuners · ChiptuneFILE

Stage 1 file for the 40d - 340ch

Send the ECU read, get back an optimised and tested file.

  • Stage 1, Stage 2, E85
  • Checksum corrected, original file kept
  • For professionals only
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Everything about 40d - 340ch tuning

Tuning the 40d - 340ch found in the BMW X4M is one of the most popular performance upgrades. This engine offers excellent potential for power and torque gains.

On ChiptuneMAP, find verified gain data for each stage, compare tuner prices and find the ideal professional for your project.

Gains summary by stage

On the BMW X4M 40d - 340ch, tuning delivers up to +100 hp and +180 Nm depending on the stage. Stock vs tuned figures:

StagePowerTorqueIndicative price
Stage 1340 → 400 hp700 → 800 NmOn quote
Stage 2340 → 440 hp700 → 880 NmOn quote

Frequently asked questions

What gains can I expect from tuning the 40d - 340ch?
Tuning the 40d - 340ch (BMW X4M) delivers significant power and torque gains depending on the chosen stage. Stage 1, with no hardware modifications, offers the best gain-to-reliability ratio.
Is tuning reliable on the 40d - 340ch?
Yes, the 40d - 340ch is known for its reliability when tuned, especially at Stage 1. It's essential to use a professional, experienced tuner with maps tailored to your engine.
How much does BMW X4M tuning cost?
Prices vary by stage and tuner. Check our directory to compare rates from professionals near you.
Should I get a tuning box or an ECU remap?
ECU remapping (modifying the engine control unit map) delivers better results and integration than a plug-in tuning box. It's customized for each engine.
How do I find a tuner for my BMW X4M?
Use the ChiptuneMAP directory to find a tuner near you. Compare prices, services and specialties.

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