M40d - 326ch Tuning
BMW X4 — Detailed power and torque gains by stage.
Gains by stage(2)
Power
326 hp
Torque
680 Nm
diesel
Power
326→380ch
+54 ch
+17%
Torque
680→760Nm
+80 Nm
+12%
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Everything about M40d - 326ch tuning
Tuning the M40d - 326ch found in the BMW X4 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 X4 M40d - 326ch, tuning delivers up to +94 hp and +160 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 326 → 380 hp | 680 → 760 Nm | — |
| Stage 2 | 326 → 420 hp | 680 → 840 Nm | — |
Frequently asked questions
What gains can I expect from tuning the M40d - 326ch?
Tuning the M40d - 326ch (BMW X4) 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 M40d - 326ch?
Yes, the M40d - 326ch is known for its reliability when tuned, especially at Stage 1. It's essential to use a certified tuner with maps tailored to your engine.
How much does BMW X4 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 X4?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.