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BMW M3 M3 343hp

E46 - 1998 - 2005

343 Original HP
365 Modified HP
365 Original NM
390 Modified NM
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BMW M3

BMW M3 E46 - 1998 - 2005 M3 343hp

Key Specifications

Generazione E46 - 1998 - 2005
Carburante Petrol
Power 343 → 365 hp +22 hp
Torque 365 → 390 Nm +25 Nm
Power
365 HP
+22 HP (+6.4%)
Original 343 HP
Stage 1 365 HP
Torque
390 NM
+25 NM (+6.8%)
Original 365 NM
Stage 1 390 NM

Power Graph

Original Power 343HP
Original Torque 365Nm
Power After Remap 365HP
Torque After Remap 390Nm

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Frequently Asked Questions - BMW M3

The cost of Stage 1 tuning for BMW M3 M3 343hp varies depending on the ECU and specific requirements. Contact us for a free personalized quote.

Stage 1 tuning for BMW M3 typically takes 1-2 hours of work. Time may vary depending on the ECU type.

Yes, our Stage 1 tunes are developed respecting the engine's safety margins. The power increase from 343 to 365 HP (+6%) is within safe parameters.

With Stage 1 tuning, BMW M3 goes from 343 HP to 365 HP (+22 HP) and from 365 Nm to 390 Nm (+25 Nm).

Stage 2 increases power from 343 HP to 375 HP (+32 HP). It typically requires additional hardware modifications such as sports exhaust or downpipe.

Stage 1 remapping takes it from 343 HP to 365 HP (+22 HP, +6%) and torque from 365 Nm to 390 Nm (+25 Nm). These figures refer to the standard engine, with no hardware modifications.

A remap changes the factory calibration, so on a vehicle still under manufacturer warranty it may affect coverage on powertrain components. Performance tuning keeps all emission systems working; deactivating emission devices such as DPF, EGR or AdBlue is not road-legal in the EU and UK and is intended for off-road, motorsport or export use only.

With a normal driving style consumption usually stays the same or drops slightly: the extra torque at low rpm means less throttle for the same speed. Consumption goes up only if you actually use the additional power.

Yes. The original file is read and stored before any modification, so the vehicle can be returned to the factory calibration at any time.

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BMW
BMW M3 M3 343hp
+22 HP
365 HP