Expected gains of +43 BHP and +63 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Chevrolet Silverado 6.6 V8 397hp? A Stage 1 remap can take this 2014 -> diesel engine from 397 BHP to 440 BHP and from 1037 Nm to 1100 Nm of torque (turbocharged). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Chevrolet Silverado can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Chevrolet Silverado 6.6 V8 397hp is a 6.6L turbocharged diesel engine producing 397 BHP and 1037 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 440 BHP and 1100 Nm — a gain of around 43 BHP (11%) and 63 Nm (6%).
This engine has moderate remap suitability, with gains weighted towards peak power — the improvement is most noticeable at higher RPM. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: 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 |
|---|
| 4.3 V6 285hp | 285 → 305 | +20 | 414 → 435 | +21 | Limited (3.5/10) |
| 5.3 V8 355hp | 355 → 375 | +20 | 519 → 540 | +21 | Limited (3/10) |
| 6.0 V8 360hp | 360 → 380 | +20 | 542 → 570 | +28 | Limited (3.5/10) |
| 6.2 V8 420hp | 420 → 440 | +20 | 609 → 640 | +31 | Limited (3/10) |
Get a personalised remap quote for your Chevrolet Silverado. 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.