Considering an ECU remap for your GMC Savana 6.6 V8 365hp? A Stage 1 remap can take this 2003 -> diesel engine from 365 BHP to 390 BHP and from 894 Nm to 930 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 GMC Savana can achieve.
The GMC Savana 6.6 V8 365hp is a 6.6L turbocharged diesel engine producing 365 BHP and 894 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 390 BHP and 930 Nm — a gain of around 25 BHP (7%) and 36 Nm (4%).
This engine has moderate 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: 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 200hp | 200 → 220 | +20 | 353 → 380 |
| +27 |
| Moderate (4/10) |
| 5.7 V8 255hp | 255 → 275 | +20 | 447 → 470 | +23 | Limited (3.5/10) |
| 4.8 V8 275hp | 275 → 295 | +20 | 393 → 415 | +22 | Limited (3.5/10) |
| 5.3 V8 310hp | 310 → 330 | +20 | 453 → 480 | +27 | Limited (3.5/10) |
| 6.0 V8 342hp | 342 → 360 | +18 | 506 → 530 | +24 | Limited (3.5/10) |
Get a personalised remap quote for your GMC Savana. 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.
