GMC Envoy 2002 - 2010 4.2i - 270hp
Real standard and upgraded performance figures for the 4.2i - 270hp engine in the GMC Envoy 2002 - 2010.
Below: measured output for the 4.2i - 270hp in the GMC Envoy 2002 - 2010, standard vs. remapped, in both horsepower and torque.
| Horsepower (HP) | Torque (Nm) | |
|---|---|---|
| Standard | 270 | 373 |
| Stage 1 | 290 | 395 |
| Stage 2 | 300 | 406 |
- Make
- GMC
- Model
- Envoy
- Generation
- 2002 - 2010
- Engine
- 4.2i - 270hp
- Fuel type
- petrol
Frequently asked questions
Is Stage 1 tuning safe for the GMC Envoy 2002 - 2010 4.2i - 270hp?
Yes — Stage 1 for this engine is a software-only remap calibrated to stay within its stock mechanical limits (turbo, clutch, fueling), so no hardware changes are required.
How much more power does the 4.2i - 270hp make after tuning?
Standard output is 270 HP / 373 Nm; Stage 1 on this engine typically reaches 290 HP / 395 Nm. Exact results can vary slightly with fuel quality and vehicle condition.
How long does a GMC Envoy 2002 - 2010 4.2i - 270hp remap take?
Once your original file is uploaded through the member panel, most requests for this engine are completed within a few hours.
Can the 4.2i - 270hp be reverted to its original file?
Yes — we keep the original file on record for the request, so the ECU can be put back to stock at any time.