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 2007 - 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.
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.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
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 195hp | 195 → 215 | +20 | 260 → 280 | +20 | Moderate (4/10) |
| 4.8 V8 295hp | 295 → 314 | +19 | 414 → 439 | +25 | Limited (3.5/10) |
| 5.3 V8 315hp | 315 → 335 | +20 | 458 → 480 | +22 | Limited (3.5/10) |
| 6.0 V8 360hp | 360 → 380 | +20 | 515 → 535 | +20 | Limited (3/10) |
| 6.2 V8 403hp | 403 → 425 | +22 | 565 → 585 | +20 | 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.