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BMW Z4 3.5i - N54 - 306hp

E85 - 2003 - 2008

306 Original HP
370 Modified HP
400 Original NM
500 Modified NM
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BMW Z4

BMW Z4 E85 - 2003 - 2008 3.5i - N54 - 306hp

Key Specifications

Generazione E85 - 2003 - 2008
Carburante Petrol
Power 306 → 370 hp +64 hp
Torque 400 → 500 Nm +100 Nm
Power
370 HP
+64 HP (+20.9%)
Original 306 HP
Stage 1 370 HP
Torque
500 NM
+100 NM (+25%)
Original 400 NM
Stage 1 500 NM

Power Graph

Original Power 306HP
Original Torque 400Nm
Power After Remap 370HP
Torque After Remap 500Nm

Discover Our Tuning Solutions

Frequently Asked Questions - BMW Z4

The cost of Stage 1 tuning for BMW Z4 3.5i - N54 - 306hp varies depending on the ECU and specific requirements. Contact us for a free personalized quote.

Stage 1 tuning for BMW Z4 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 306 to 370 HP (+21%) is within safe parameters.

With Stage 1 tuning, BMW Z4 goes from 306 HP to 370 HP (+64 HP) and from 400 Nm to 500 Nm (+100 Nm).

Stage 1 remapping takes it from 306 HP to 370 HP (+64 HP, +21%) and torque from 400 Nm to 500 Nm (+100 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 Z4 3.5i - N54 - 306hp
+64 HP
370 HP