4.4T - 621ch Tuning
Alpina XB7 — Detailed power and torque gains by stage.
Gains by stage(4)
Power
621 hp
Torque
800 Nm
essence
Power
621→700ch
+79 ch
+13%
Torque
800→900Nm
+100 Nm
+13%
OriginalTuned
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Everything about 4.4T - 621ch tuning
Tuning the 4.4T - 621ch found in the Alpina XB7 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 Alpina XB7 4.4T - 621ch, tuning delivers up to +149 hp and +190 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 621 → 700 hp | 800 → 900 Nm | — |
| Stage 2 | 621 → 770 hp | 800 → 990 Nm | — |
| E85 Flexfuel | 621 → 621 hp | 800 → 800 Nm | — |
| E85+ | 621 → 700 hp | 800 → 900 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 4.4T - 621ch?
Tuning the 4.4T - 621ch (Alpina XB7) 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 4.4T - 621ch?
Yes, the 4.4T - 621ch 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 Alpina XB7 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 Alpina XB7?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.