ENVOY |
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| Year | Engine | Original Power | Stage 1 | Difference | Vmax | ECU |
| 2007-2010 | 5.3L | 300 Hp 321 Lb-Ft | 320 Hp 345 Lb-Ft | 20 hp | ✓* | E67 |
| 2007-2009 | 6.0L | 390 Hp 400 Lb-Ft | 415 Hp 425 Lb-Ft | 25 hp | ✓* | E67 |
| 2008-2009 | 4.2L | 285 Hp 276 Lb-Ft | 295 Hp 296 Lb-Ft | 20 hp | ✓* | E67 |
*Depends on the software version