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The standard power of your GMC Envoy 4.2i - 270hp vehicle is factory 270 hp / 373 nm. After GMC Envoy chip tuning custom vehicle software, your vehicle will gain +20 hp / +22 nm additional power and reach a total power of 290 hp / 395 nm. Since there will be no change in the exhaust emission values of your vehicle, there will be no smoke in your vehicle.
GMC Envoy 4.2i - 270hp chip tuning stage1 file is completed in about 1-2 hours.
| Type of fuel | petrol |
| Method | Chiptuning |
| Tuning type | Stage 1 |
| Cylinder content | 4160 CC |
| Compression ratio | 10.00 : 1 |
| Bore X stroke | 93.00 X 102.00 mm |
| Engine number | LL8 |
| Engine ECU |
| Gearbox ECU |
