4.4 (M) - 555ch Tuning
BMW X5 M — Detailed power and torque gains by stage.
Gains by stage(4)
Power
555 hp
Torque
680 Nm
essence
Power
555→630ch
+75 ch
+14%
Torque
680→800Nm
+120 Nm
+18%
OriginalTuned
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Everything about 4.4 (M) - 555ch tuning
Tuning the 4.4 (M) - 555ch found in the BMW X5 M 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 X5 M 4.4 (M) - 555ch, tuning delivers up to +135 hp and +200 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 555 → 630 hp | 680 → 800 Nm | — |
| Stage 2 | 555 → 690 hp | 680 → 880 Nm | — |
| E85 Flexfuel | 555 → 555 hp | 680 → 680 Nm | — |
| E85+ | 555 → 630 hp | 680 → 800 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 4.4 (M) - 555ch?
Tuning the 4.4 (M) - 555ch (BMW X5 M) 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 4.4 (M) - 555ch?
Yes, the 4.4 (M) - 555ch 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 X5 M 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 X5 M?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.