Description
Dinan Performance Automatic Transmission Software – 2001-2006 BMW 325i/330i/525i/530i/X5/Z3. Firmer, quicker changes under load while normal driving stays close to factory. Supplied for E36/E37/E38/E39/E46/E53.
Key Features:
- Revised shift mapping: Firmer, quicker changes under load while normal driving stays close to factory.
- Raised torque limits: Transmission torque ceilings lifted so the gearbox copes with a tuned engine.
- Pairs with engine tuning: Designed to be run alongside Dinan engine calibration.
- Reversible: The stock transmission program can be restored.
Fitment:
- BMW X5 2000-2006
Dinan part D902-30A5. Confirm fitment against your exact model and build date before ordering.

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