BMW M3 - 4.0i
2 ECUs found for this engine. Select an ECU to view available tuning services and pricing.
BMW M3 4.0i Engine Specifications
BMW M3 4.0i Stage 1 Chiptuning Results
| Variant | Original HP | Tuned HP | +HP | Original Nm | Tuned Nm | +Nm |
|---|---|---|---|---|---|---|
| M3 420hp | 420 | 440 | +20 | 400 | 430 | +30 |
BMW M3 4.0i: Before this file is prepared
For the BMW M3 4.0i, the uploaded file is the final reference. We check whether it is original or already modified before preparing the order, and we contact you first if the read or selected service does not match the vehicle data.
- Upload a complete original ECU read from the tool you used, or a TCU read only when the selected service is gearbox tuning.
- Add the vehicle year, gearbox, read/write tool and any dashboard or diagnostic symptoms.
- Select only the services that match the actual vehicle hardware and intended legal use.
BMW M3 4.0i Frequently Asked Questions
- What tuning services are available for the BMW M3 4.0i?
- WEREMAP offers 18 tuning services across 2 ECU variants for the BMW M3 4.0i.
- How much does ECU tuning cost for a BMW M3?
- ECU tuning prices for the BMW M3 4.0i range from 24 to 180 credits, depending on the ECU variant and tuning service selected.
- What ECU does the BMW M3 4.0i use?
- The BMW M3 4.0i is available with the following ECU variants: Siemens/Continental MSS60, Siemens/Continental MSS65. WEREMAP provides professional tuning files for all of these.
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