ChiptuneMAP
ChiptuneMAP/Alpina/D3 S/40d - 355ch
Alpina

40d - 355ch Tuning

Alpina D3 S: detailed power and torque gains by stage.

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Stage 1 for your D3 S: garage prices

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Gains by stage(2)

Power

355 hp

Torque

730 Nm

Diesel
Power
355→400hp
+45 hp
+13%
Torque
730→800Nm
+70 Nm
+10%
OriginalTuned

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Tuners · ChiptuneFILE

Stage 1 file for the 40d - 355ch

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 - 355ch tuning

Tuning the 40d - 355ch found in the Alpina D3 S 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 D3 S 40d - 355ch, tuning delivers up to +85 hp and +150 Nm depending on the stage. Stock vs tuned figures:

StagePowerTorqueIndicative price
Stage 1355 → 400 hp730 → 800 NmOn quote
Stage 2355 → 440 hp730 → 880 NmOn quote

Frequently asked questions

What gains can I expect from tuning the 40d - 355ch?
Tuning the 40d - 355ch (Alpina D3 S) 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 - 355ch?
Yes, the 40d - 355ch 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 Alpina D3 S 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 D3 S?
Use the ChiptuneMAP directory to find a tuner near you. Compare prices, services and specialties.

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