Considering an ECU remap for your Buick Lacrosse 5.3 V8 300hp? A Stage 1 remap can take this 2005 - 2009 petrol engine from 300 BHP to 320 BHP and from 438 Nm to 460 Nm of torque (naturally aspirated). This engine scores 3.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Buick Lacrosse can achieve.
The Buick Lacrosse 5.3 V8 300hp is a 5.3L naturally aspirated petrol engine producing 300 BHP and 438 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 320 BHP and 460 Nm — a gain of around 20 BHP (7%) and 22 Nm (5%).
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.. High tuned torque: check transmission torque capacity and service history.
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.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 3.8 V6 200hp | 200 → 219 | +19 | 312 → 337 | +25 | Moderate (4/10) |
| 3.6 V6 240hp | 240 → 262 | +22 | 311 → 339 | +28 | Moderate (4/10) |
Get a personalised remap quote for your Buick Lacrosse. We'll connect you with a trusted professional in your area.
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 before proceeding.
