BHP+16 hp (6%)
Standard
279 hp
Tuned
295 hp
Torque+22 Nm (6%)
Standard
373 Nm
Tuned
395 Nm
Suitability
Moderate (4/10)Gains Profile
Limited headroomHeadroom
LowBuick Rainier 4.2 V8 279hp ECU Remapping
Considering an ECU remap for your Buick Rainier 4.2 V8 279hp? A Stage 1 remap can take this 2004 - 2007 petrol engine from 279 BHP to 295 BHP and from 373 Nm to 395 Nm of torque (naturally aspirated). This engine scores 4/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Buick Rainier can achieve.
How this engine compares
- 2ndof 3 Buick Rainier engines by power gain
- 12%of the 9,842 engines we hold gain data for see a smaller power increase
- 12%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The Buick Rainier 4.2 V8 279hp is a 4.2L naturally aspirated petrol engine producing 279 BHP and 373 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 295 BHP and 395 Nm — a gain of around 16 BHP (6%) and 22 Nm (6%).
This engine has limited remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
Other Rainier 2004 - 2007 Engines
| Engine | BHP | Gain | Torque | Gain |
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