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Buick Rainier 4.2 V8 279hp

2004 - 2007

279 Original HP
295 Modified HP
373 Original NM
395 Modified NM
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Buick Rainier

Buick Rainier 2004 - 2007 4.2 V8 279hp

Key Specifications

Generazione 2004 - 2007
Carburante Petrol
Power 279 → 295 hp +16 hp
Torque 373 → 395 Nm +22 Nm
Power
295 HP
+16 HP (+5.7%)
Original 279 HP
Stage 1 295 HP
Torque
395 NM
+22 NM (+5.9%)
Original 373 NM
Stage 1 395 NM

Power Graph

Original Power 279HP
Original Torque 373Nm
Power After Remap 295HP
Torque After Remap 395Nm

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Frequently Asked Questions - Buick Rainier

The cost of Stage 1 tuning for Buick Rainier 4.2 V8 279hp varies depending on the ECU and specific requirements. Contact us for a free personalized quote.

Stage 1 tuning for Buick Rainier 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 279 to 295 HP (+6%) is within safe parameters.

With Stage 1 tuning, Buick Rainier goes from 279 HP to 295 HP (+16 HP) and from 373 Nm to 395 Nm (+22 Nm).

Stage 1 remapping takes it from 279 HP to 295 HP (+16 HP, +6%) and torque from 373 Nm to 395 Nm (+22 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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Buick
Buick Rainier 4.2 V8 279hp
+16 HP
295 HP